On this Page we have given West Bengal Class 8 English Medium Science Solution Chapter 10 Biodiversity , Environmental Crisis, and Conservation of Endangered Animals Question and Answer for our Students of West bengal Class 8 English Medium. Hope this following Question Answer will help our Students.
West Bengal Class 8 | Science | Biodiversity , Environmental Crisis, and Conservation of Endangered Animals
Q.(1)
1.) The physical factors of weather which control the structure of a forest are
a ) Sunlight, Temperature, Wind flow
b) Rainfall, Amount of water vapor in the air, Control of weather
c) Control of temperature, Habitat of wild animals, Control of erosion of soil and flood
d) Production of wood, Control of water-level under the soil, Source of fuel
Answer: Sunlight, Temperature, Wind flow
2.) One benefit that humans get from a forest
a) Control of erosion of soil and flood
b) Production of wood for furniture and industries
c) Control of water-level under the soil
d) Source of different drugs to combat diseases
Answer: Production of wood for furniture and industries
3.) A forest play a role for the environment but
a) Control of temperature of earth and its water cycle
b) Habitat of wild animals
c) Source of fuel
d) All of the above
Answer: All of the above
4.) Approximately what percentage of India’s total land area is covered by forests
A) 21%
b) One-third
c) 50%
d) 10%
Answer: 21%
5.) The component/material of the forest that is used for making a cricket bat is
a) Teak
b) Arjun
c) Emblica
d) Tiger
Answer: Teak
6.) Name the plant that can thrive in a forest of evergreen plants
A) Rose apple
b) Banyan
c) Mango
d) Tiger
Answer: Banyan
7.) _____ can be found in a forest of mangrove plants with breathing roots
A) Garan
b) Gewa
c) Baine
d) Tiger
Answer: Tiger
8.) Plants such as rose apple, mango , Banyan tree are inhabitants of forest called
a ) Evergreen forest
b ) Deciduous forest
c ) Tropical forest
d ) Mountainous forest
Answer : Evergreen forest
9.) It is the first layer in the structure of an ideal forest
a) Canopy layer
b) Understory layer
c) Shrub layer
d) Forest floor layer
Answer: Canopy layer
10.) The main characteristic of the canopy layer is
A) It receives maximum sunlight
b) It is the darkest layer
c) It is composed of short species of trees
d) It forms a dense closed cover
Answer: It forms a dense closed cover
11.) Name the layer of the forest that is mainly composed of young trees, mature shrubs, and thorny bushes
A) Canopy layer
b) Understory layer
c) Shrub layer
d) Herb layer
Answer: Shrub layer
12.) The herb layer in a forest has one of the following characteristics
a) It is the lowest layer of the forest
b) It consists of sprouting plants and weeds
c) It provides food and shelter for small animals
d) It is composed of dead leaves and animal carcasses
Answer: It consists of sprouting plants and weeds
13.) This layer has an incredible combination of dead leaves, fallen petals, and animal carcasses
A) Canopy layer
b) Understory layer
c) Shrub layer
d) Forest floor layer
Answer: Forest floor layer
14.) _____ is formed when the materials on the forest floor mixes up with soil
A) Canopy layer
b) Understory layer
c) Humus
d) Shrub layer
Answer: Humus
15.) Identify the organisms which are commonly found in the forest floor layer
A) Earthworms, cockroaches, scorpions
b) Birds, snakes, turtles
c) Microscopic organisms, fungi
d) Large trees, shrubs, and herbs
Answer: Earthworms, cockroaches, scorpions
16.) About ___ percent of Earth’s total land area is covered by forests
A) 23%
b) 5%
c) 33%
d) 95%
Answer: 33%
17.) Name the continent that has the highest percentage of forest cover
A) America
b) Oceania
c) Asia
d) Africa
Answer: America
18.) _____ type of forest is mostly observed along the equator
a) Temperate forests
b) Coniferous forests
c) Rainforests
d) Deciduous forests
Answer: Rainforests
19.) How long does it take for rain to reach the ground in a dense tropical rainforest
A) 1 minute
b) 5 minutes
c) 10 minutes
d) 30 minutes
Answer: 10 minutes
20.) Approximately how many known plant species are found in rainforests
A) 40
b) 50
c) 170,000
d) 250,000
Answer: c) 170,000
21.) A significant portion of the Earth’s atmospheric oxygen is produced by
A) Temperate forests
b) Coniferous forests
c) Rainforests
d) Deciduous forests
Answer: Rainforests
22.) The primary reason for rainforest destruction is
a) Natural disasters
b) Animal migration
c) Human activities
d) Climate change
Answer: Human activities
23.) One of the factors can contribute to forest fires
a) Volcanic eruption
b) Animal migration
c) Tree growth
d) Rainfall
Answer: Volcanic eruption
24.) What happens to the concentration of CO2 in the air when forests are damaged by fire
A) It decreases gradually
b) It increases steadily
c) It remains unchanged
d) It fluctuates randomly
Answer: It increases steadily
25.) After forest fire the soil’s ability to retain water
A) increases water retention capacity
b) decreases water retention capacity
c) It has no effect on water retention
d) It causes soil erosion
Answer: decreases water retention capacity
26.) The consequence of prolonged forest fires in terms of flood risk are
A) Decreased chance of flooding
b) Increased chance of flooding
c) No effect on flood risk
d) Increased soil erosion
Answer: Increased chance of flooding
27.) After a forest fire water bodies get polluted
a) From volcanic eruptions
b) From lightning strikes
c) From the tons of ash runoff
d) From increased soil erosion
Answer: from the tons of ash runoff
28.) When deeply rooted plants are removed from an area , how does it affect the soil
A) The soil becomes compacted
b) The soil becomes granular and dry
c) The soil retains more water
d) The soil becomes fertile
Answer: The soil becomes granular and dry
29.) It’s the term used when forests are wiped out in a particular region
A) Desertification
b) Increased water retention in the soil
c) Enhanced biodiversity
d) Decreased rainfall
Answer: Desertification
30.) What happens to the water cycle if forests are cleared and more CO2 enters the atmosphere
A) The water cycle becomes more efficient
b) Rainfall increases
c) The water cycle gets disrupted
d) The water cycle becomes faster
Answer: The water cycle gets disrupted
31.) If a specific type of forest is destroyed, the biodiversity
A) Biodiversity increases
b) Biodiversity remains unchanged
c) Biodiversity becomes depleted
d) Biodiversity becomes more diverse
Answer: Biodiversity becomes depleted
32.) One of the following is a measure to conserve forests
A) Increasing deforestation activities
b) Preventing felling of trees in forest areas
c) Encouraging forest fires
d) Removing saplings and creating new forest areas
Answer: Preventing felling of trees in forest areas
33.) The appropriate time for trees to be cut in a forest conservation approach is
A) As soon as they start growing
b) After they reach a proper age
c) Without considering the tree species
d) When they are young and small
Answer: After they reach a proper age
34.) A significant measures to check the spread of diseases in forests
A) Planting diseased trees in the forest
b) Ignoring tree diseases
c) Taking adequate measures to check the spread of disease
d) Allowing diseased trees to spread diseases to other trees
Answer: Taking adequate measures to check the spread of disease
35.) Types of trees they are observed in the forests of North Bengal arw
a) Oak and Cedar
b) Sal, Gambar, Odal, Khair, Sishu, Emblica
c) Bamboo and Palm
d) Teak and Mahogany
Answer: Sal, Gambar, Odal, Khair, Sishu, Emblica
36.) In Duars and Terai region the natural forests are shrinking in size
a) Due to leopard attacks
b) Due to the creation of artificial forests
c) Due to plantation of tea
d) Due to human-elephant conflict
Answer: Due to plantation of tea
37.)_____ is now an endangered animal in the forests of North Bengal
a) One-horned rhinoceros
b) Leopards
c) Elephants
d) Wild goats
Answer: One-horned rhinoceros
38.) How do plants in the mangrove forest adapt to survive in the environment
A) They develop respiratory roots and stilt roots
b) They have large leaves for water retention
c) They grow taller to avoid high tides
d) They shed leaves to eliminate excess salts
Answer: They develop respiratory roots and stilt roots
39.) It’s a problem which plants in the mangrove forest frequently face during high tide
A) Excess moisture in the soil
b) Lack of sunlight
c) Toxicity due to saltwater
d) Soil erosion
Answer: Toxicity due to saltwater
40.) It’s a consequence of increasing water height and salinity in the mangrove forest
A) Decrease in the number of trees
b) Increase in the number of animals
c) Change in plant species composition
d) No impact on the forest ecosystem
Answer: Decrease in the number of trees
41.) Which animal’s life is threatened in the mangrove forest due to increasing water salinity
a) Tiger
b) Estuarine crocodile
c) River terrapin
d) All of the above
Answer: All of the above
42.) The shells found at the seaside are made up of
a) Rock
b) Sand
c) Marine animal covering
d) Seaweed
Answer: Marine animal covering
43.) The windows of a deep-sea vehicle should be made of a special material
A) To allow more light inside
b) To withstand the water pressure
c) To prevent algae growth
d) To provide a clear view of the coral reefs
Answer: To withstand the water pressure
44.) What happens to the light as we dive deeper into the sea
a) It becomes brighter
b) It remains the same
c) It gradually wanes
d) It becomes completely dark
Answer: it gradually wanes
45.) It has a high diversity of marine life in the sea
a) Everywhere in the sea
b) Only in regions with coral reefs
c) In regions with algae-like plants
d) Near the water surface during daytime
Answer: Only in regions with coral reefs
46.) _______ and ______ can be found in the space between high tide and low tide
A) Seaweeds and rocks
b) Lichens and mussels
c) Sand and starfishes
d) Snails and sharks
Answer: Lichens and mussels
47.) The organisms living in the deep sea get their food by
A) Sunlight
b) Photosynthesis
c) Hunting other organisms
d) Temperature fluctuations
Answer: Hunting other organisms
48.) The water temperature ________ as one goes deeper into the sea
a) It remains the same
b) It increases
c) It decreases
d) It fluctuates
Answer: It decreases
49.) Organisms move through different depths in the ocean
A) To search for food
b) To avoid predators
c) To find suitable temperature
d) To reach sunlight
Answer: To search for food
50.) Its the term used to describe the light produced by organisms in the deep ocean
a) Sunlight
b) Bioluminescence
c) Photosynthesis
d) Luciferin
Answer: Bioluminescence
51.) These are the two substances that are present in the body of bioluminescent organisms
a) Oxygen and luciferin
b) Luciferin and luciferase
c) Biolumin and lucifense
d) Protein and pigment
Answer: luciferin and luciferase
52.) Light energy is produced in bioluminescent organisms
A) Through chemical reactions with luciferin and oxygen
b) Through exposure to sunlight
c) Through symbiotic relationship with bacteria
d) Through the process of photosynthesis
Answer: Through chemical reactions with luciferin and oxygen
53.) The majority of bioluminescent organisms are found in the depth of
A) Near the water surface
b) At depths of 100-200 meters
c) At depths of 200-1000 meters
d) In the euphotic zone
Answer: At depths of 200-1000 meters
54.) How does bioluminescence benefit organisms?
a) Helps them find food
b) Attracts prey
c) Facilitates mimicry
d) All of the above
Answer: All of the above
55.) The cell wall of din flagellates are composed of
a) Silica
b) Protein
c) Calcium carbonate
d) Cellulose
Answer: Silica
57.) zooplankton primarily move in the ocean by
a) Swimming using flagella
b) Drifting with the currents
c) Walking on the ocean floor
d) Flying above the water surface
Answer: Drifting with the currents
58.) What do the tentacles of a sea anemone contain
a) Stinging cells
b) Suckers
c) Feathers
d) Photosynthetic pigments
Answer: Stinging cells
59.) The mouth of an octopus islocated
a) At the end of its arms
b) On top of its head
c) On its back
d) In the middle of its arms
Answer: In the middle of its arms
60.) It’s an invertebrate animal that is believed to have the most developed brain and eyes
A) Squid
b) Cuttlefish
c) Octopus
d) Shark
Answer: Octopus
61.) Name the octopus species that can be fatal to humans
a) Giant Octopus
b) Blue-ringed Octopus
c) Pacific Octopus
d) Timid Octopus
Answer: Blue-ringed Octopus
62.) An octopus defend itself when attacked by
a) Biting its attackers
b) Spraying ink-like substance
c) Camouflaging with its surroundings
d) Curling up into a ball
Answer: Spraying ink-like substance
63.) The skeleton of a shark is made up of
a) Hard bones
b) Cartilage
c) Calcium compound
d) Soft tissues
Answer: Cartilage
64.) _______ shark species is known as a man-eater
a) Great White Shark
b) Hammerhead Shark
c) Tiger Shark
d) Nurse Shark
Answer: Great White Shark
65.) Generally, A shark replaces it’s teeth by
a) Grows a new tooth
b) Reverses the broken tooth
c) Moving a tooth from the back row
d) Doesn’t replace the tooth
Answer: Moving a tooth from the back row
66.) Name the marine animal which has five arms and tube feet
a) Starfish
b) Spider crab
c) Swordfish
d) Lobster
Answer: Starfish
67.) Identify the animal that catches its prey by creating a temporary vacuum with its tube feet
A) Starfish
b) Spider crab
c) Swordfish
d) Lobster
Answer: Starfish
68.)This shark species is known for its large size but harmless nature towards humans
A) Basking Shark
b) Whale Shark
c) Hammer-headed Shark
d) Great White Shark
Answer : Whale Shark
69.) Which marine animal is a reptile known for its green color and is commonly found in the sea?
A) Spider crab
b) Swordfish
c) Green sea turtle
d) Blue-ringed Octopus
Answer: Green sea turtle
70.) _____ is the term used to describe the situation when the number of phytoplanktons increases enormously
A) Algal Bloom
b) Pollution bloom
c) Marine expansion
d) Oxygen deficiency
Answer: Algal Bloom
71.) How does oil spill affect marine life
a) It increases the oxygen levels in water
b) It provides nutrients for marine organisms
c) It causes lesions on the skin of marine animals
d) It promotes photosynthesis in phytoplanktons
Answer: It causes lesions on the skin of marine animals
72.) If the acidity in ocean water increases the aquatic animals with gills are affected as
A) It enhances their respiration process
b) It increases their reproductive abilities
c) It helps in the formation of calcium carbonate shells
d) It makes it difficult for them to obtain dissolved oxygen
Answer: It makes it difficult for them to obtain dissolved oxygen
73.) ____ if present in the ocean can lead to oxygen deficiency and potential death of marine animals
a) Chemical fertilizers
b) Plastic waste
c) Oil spills
d) Sewage
Answer: Chemical fertilizers
74.) the shells of snails, oysters, and corals ___________ it the way acidity is increased
A) become larger in size
b) become stronger and more resistant
c) dissolve due to excessive acidity
d) form a protective layer
Answer: dissolve due to excessive acidity
75.) It’s the primary factor contributing to the extreme temperatures in desert
A) Abundance of water
b) High humidity
c) Intense sunlight
d) Strong winds
Answer: Intense sunlight
76.) Deserts are usually present along the Tropic of Cancer and the Tropic of Capricorn because
A) Due to excessive rainfall in those regions
b) Because of their proximity to the Equator
c) Result of geological activity
d) Influence of ocean currents
Answer: Because of their proximity to the Equator
77.) Desserts receive an average annual rainfall of
a) Over 100 centimeters
b) Between 50-100 centimeters
c) Below 20 centimeters
d) Around 200 centimeters
Answer: Below 20 centimeters
78.) Select the major cause of the expansion of deserts
a) Deforestation
b) Urbanization
c) Climate change
d) Overgrazing
Answer: Climate change
79.) One of the following desert is known for its extreme cold temperatures
a) Thar Desert
b) Sahara Desert
c) Gobi Desert
d) Antarctic Desert
Answer: Antarctic Desert
80.) Identify some animals that are commonly found in the Arabian Desert
A) Camel, Fox, Hare, Sand cobra
b) Porcupine, Chameleon, Scorpion, Vulture
c) Bactrian camel, Beetle, Blue mountain pigeon, Bear, Snow leopard, Wild sheep
d) Thorned-tailed lizard, Fox, Camel, Snake, Vulture
Answer: Camel, Fox, Hare, Sand cobra
81.) An oasis in a desert is usually a
a) A sea of sand
b) A large rock formation
c) A pond surrounded by trees and water
d) A hot and barren region
Answer: A pond surrounded by trees and water
82.) Oasis formations are limited in the desert because of
a) Lack of rainfall
b) Scarcity of rocks
c) Absence of trees
d) Excessive heat
Answer: Lack of rainfall
83.) Mention the ways some plants in the desert adapt to resist dryness
a) They have thorny leaves
b) They bloom and produce seeds before dying
c) They store water in their bodies
d) They have deep roots to search for water
Answer: They store water in their bodies
84.) Cacti plants have thorns on their body so
a) To attract birds for pollination
b) To protect the plants from animals
c) To store water during dry periods
d) To aid in photosynthesis
Answer: To protect the plants from animals
85.)_____ plant can live for about two hundred years and has yellow-green bell-shaped flowers
A) Cactus
b) Jashua plant
c) Saguaro cactus
d) Prickly pear
Answer: Jashua plant
86.) Even though there is scarcity of water in desserts the cacti plants survive by
A) They store water in their leaves
b) They collect water from rainfall
c) They have long taproots reaching deep into the ground
d) They absorb water through their stems
Answer: They have long taproots reaching deep into the ground
87.) What is the primary mode of transport in the desert
a) Cactus
b) Mesquite plant
c) Camels
d) Saguaro cactus
Answer: Camels
88.) The humps of camels acts as a storage for
a) Water
b) Food
c) Fat
d) Air
Answer: Fat
89.) The desert animals compensate for the scarcity of water
A) By hiding in the sand
b) By catching prey
c) By storing water in their humps
d) By changing their behavioral patterns
Answer: By catching prey
90.) Camels get their energy in the desert
a) By storing water in their hump
b) By consuming food regularly
c) By utilizing the fat stored in their hump
d) By absorbing sunlight directly
Answer: By utilizing the fat stored in their hump
91.) This helps a camel sit on the sand during sandstorms
a) Transparent eyelids
b) Short bush-like eyelashes
c) Thick pads near the knees and sternum
d) Strong muscles in their legs
Answer: Thick pads near the knees and sternum
92.) How do camels prevent excessive loss of water from their bodies
A) By producing concentrated urine
b) By sweating profusely
c) By drinking large quantities of water
d) By having long and wide legs
Answer: By producing concentrated urine
93.) Mention a way some animals in hot desert climates do to protect themselves from the heat
A) Migrate to colder regions during summer
b) Hibernate during the hottest hours of the day
c) Develop thick skin to prevent water loss
d) Increase their respiration and heart rate
Answer: Migrate to colder regions during summer
94.) Desert lizards survive in the harsh desert environment
A) By hiding in the sand during the day
b) By swimming in the sand to conserve energy
c) By storing fat in their wide tail
d) By hunting and eating insects
Answer: by hiding in the sand during the day
95.) The hollow rattle at the end of a rattlesnake’s tail has one of the following functions
A) Balancing while moving
b) Attracting mates
c) Warning signal for potential threats
d) Storing venom
Answer: Warning signal for potential threats
96.) A animal in the Thar desert that has a body color which matches the color of the sand
A) Blackbuck
b) Gerbil
c) Bustard
d) Peacock
Answer: Gerbil
97.) The name given to the people living in the Namib Desert of south-west Africa
A) Bedouin
b) Bushman
c) Tuareg
d) Hed Initia
Answer Bushman
98.) How do the people living in the Kalahari Desert get water?
A) By digging wells
b) By collecting rainwater
c) By sucking water from wet sand
d) By trading for water with neighboring tribes
Answer: By sucking water from wet sand
100.) The Bedouin people living in the Sahara and Arabian Desert wear
A) Loose dress
b) Toga
c) Sarong
d) Kimono
Answer: Loose dress
101.) _______ are the houses build by red indians of American desserts
a ) pueblo
b ) pablo
c ) piblo
d ) padlock
Ans.) Pueblo
102.) Polar Region can be defined as the
a) The region surrounding the Equator
b) The region surrounding the Tropic of Cancer
c) The region surrounding the North and South Poles
d) The region surrounding the Prime Meridian
Answer: The region surrounding the North and South Poles
103.) It’s a phenomenon that occurs in the Arctic and Antarctic circles during mid-summer
a) 24 hours of sunlight
b) 12 hours of daylight and 12 hours of darkness
c) 24 hours of darkness
d) 8 hours of daylight and 16 hours of darkness
Answer: 24 hours of sunlight
104.) Name the plants that can be found in the Arctic region
a) Palm trees and orchids
b) Oak trees and daisies
c) Moss, grass, lichen, and birch
d) Cacti and succulents
Answer: Moss, grass, lichen, and birch
105.) Hibernation can be easily defined as
a) Migration of animals from one region to another
b) Mass movement of animals during winter
c) State of inactivity and reduced body functions during winter
d) Behavior of animals giving birth to their young ones in winter
Answer: State of inactivity and reduced body functions during winter
106.) Animals migrate in the Arctic region to
a) To find food
b) To establish their territory
c) To hibernate in warmer places
d) To camouflage in the ice and snow cover
Answer: To find food
107.) When do Arctic animals lay eggs or give birth to their young ones?
A) During intense cold periods
b) During the short summer days
c) During the migration period
d) During the onset of autumn
Answer: During the short summer days
108.) The white fur of Polar Bears provide an advantage that is
A) It helps them camouflage in the ice and snow
b) It attracts prey for hunting
c) It keeps them cool in the Arctic heat
d) It helps them find their young ones easily
Answer: it helps them camouflage in the ice and snow
109.) It is an adaptation of the Polar Bear’s eyes
a) They are small and round
b) They are adapted to see underwater
c) They have a high sensitivity to light
d) They have a keen sense of color vision
Answer: They are adapted to see underwater
110.) One of the greatest threats to the Polar Bear population is
A) Hunting for fur and skin
b) Lack of food sources
c) Natural predators
d) Shrinking habitat due to global warming
Answer: Shrinking habitat due to global warming
111.) ______ are the people who settle permanently in the Arctic region
A) Eskimos
b) Bushmen
c) Bedouins
d) Tuareg
Answer: Eskimos
112.) What is the role of dogs in the life of Eskimos
a) Pulling sledges
b) Hunting animals
c) Providing companionship
d) Identifying food sources
Answer: Pulling sledge
113.) Identify a unique thing about Emperor Penguins
a) They can live in both ice and water
b) They are the smallest variety of penguin
c) They migrate to remote parts of the sea
d) They lay multiple eggs at a time
Answer: They can live in both ice and water
114.) Male Emperor Penguins incubate their eggs by
A) holding the eggs in their beaks
b) building nests to protect the eggs
c) carrying the eggs on their feet
d) placing the eggs in burrows
Answer: carrying the eggs on their feet
115.) The cause of ozone depletion in the atmosphere of Antarctica is
A) Increased volcanic activity in Antarctica
b) Excessive use of chlorofluorocarbons and halons
c) Natural fluctuations in ozone levels
d) Pollution generated within Antarctica
Answer: Excessive use of chlorofluorocarbons and halons
116.) A potential effects of increased ultraviolet radiation on humans is
A) Increased fertility rates
b) Higher resistance to diseases
c) Skin cancer and cataracts
d) Improved immune system functioning
Answer: Skin cancer and cataracts
117.) A consequence of increased shipping activities in Antarctica is
A) Reduction in oil spills
b) Improved water quality in the Antarctic Sea
c) Pollution of the Antarctic Sea due to oil spills
d) Decreased fishing activities
Answer: Pollution of the Antarctic Sea due to oil spills
118.) ______ is usually associated with the one-horned rhinoceros
A) Grasslands
b) Rainforests
c) Deserts
d) Tundra
Answer: Grasslands
119.) Gangetic dolphins are mostly the inhabitants of
a) Freshwater rivers
b) Coral reefs
c) Arctic tundra
d) Savannah grasslands
Answer: a) Freshwater rivers
120.) Name the organization that publishes the list of names of endangered animals
A) International Union for Conservation of Nature and Natural Resources
b) World Wildlife Fund
c) United Nations Environment Programme
d) Greenpeace
Answer: International Union for Conservation of Nature and Natural Resources
121.) _____ is the category for an animal that has died out completely
a) Critically Endangered
b) Extinct in Wild
c) Vulnerable
d) Lower Risk
Answer: Extinct in Wild
121.) It is the category for a species that can be wiped out completely from the face of the earth in the distant future
a) Critically Endangered
b) Endangered
c) Vulnerable
d) Lower Risk
Answer: Vulnerable
122.) This category includes animals for which there is insufficient data
A) Data Deficient
b) Critically Endangered
c) Lower Risk
d) Endangered
Answer: Data Deficient
123.) These are the two broad classes of conservation methods mentioned in the passage
a) In situ and Ex situ
b) Natural and Artificial
c) Habitat and Gene banks
d) Reserve Forest and Protected Area
Answer: In situ and Ex situ
124.) In this type of conservation endangered animals are kept in their natural habitat
a) Ex situ conservation
b) Gene conservation
c) In situ conservation
d) Artificial environment conservation
Answer: In situ conservation
125.) One of the following is NOT an example of a protected area for conservation
A) National Park
b) Sanctuary
c) Biosphere Reserve
d) Zoo
Answer: Zoo
126.) _______ is the term used for conserving microbes, seeds, tissues, cells, and genes of plants in laboratories?
A) Gene banks
b) Ex situ conservation
c) Germ cell conservation
d) Tissue Culture
Answer: Ex situ conservation
127.) It is considered as the main reason for the decline in the number of vultures
A) Loss of nesting grounds
b) Indiscriminate felling of trees
c) Diclofenac drug residue in carcasses
d) Lack of carrion depots
Answer: Diclofenac drug residue in carcasses
128.) Vultures get their food
a) By hunting small animals
b) By catching fish in rivers
c) By feeding on the dead bodies of animals
d) By stealing food from other birds
Answer: By feeding on the dead bodies of animals
129.) What is the main impact of diclofenac drug on vultures
a) Destruction of their wings
b) Loss of eyesight
c) Kidney dysfunction
d) Reduced fertility
Answer: Kidney dysfunction
130.) Under which act are all species of vultures conserved in India
A) Wildlife Protection Act
b) Forest Conservation Act
c) Vulture Conservation Act
d) Endangered Species Act
Answer: Wildlife Protection Act
131.) Wild cats inhabit _______ region of the world
a) Rainforests of the Amazon river
b) Cold deserts of Ladakh
c) Siberia and Sunderban
d) All of the above
Answer: All of the above
132.) Fishing Cats adapt to their habitat
a) By swimming and hunting fish
b) By climbing trees and eating fruits
c) By burrowing underground and eating insects
d) By flying and catching birds
Answer: By swimming and hunting fish
133.) It is the major threat to Fishing Cats
a) Construction of roads, housing projects, and shopping malls
b) Loss of wetlands and jungles
c) Poaching and hunting by humans
d) All of the above
Answer: All of the above
134.) Dolphins navigate and understand their surroundings
A) Through their sense of sight
b) By emitting sounds and hearing the echo
c) By using their sense of smell
d) Through their ability to detect light intensity
Answer: By emitting sounds and hearing the echo
135.) Dorsal bursa in dolphins have serves a specific function and that is
a) To help them swim faster
b) To aid in their sense of smell
c) To produce sounds for echolocation
d) To store food for later consumption
Answer: To produce sounds for echolocation
136.) What is the function of the blubber in dolphins
a) helps them hear better underwater
b) keeps their body warm
c) assist in their sense of taste
d) provides buoyancy while swimming
Answer: keeps their body warm
137.) Rhinoceros have thick hide because it helps them to
a) Protection from heat
b) Camouflage in the grasslands
c) Ability to swim in water
d) Enhanced sense of smell
Answer: Protection from heat
138.) Adult rhinoceroses primarily feed upon
a) Other animals
b) Aquatic plants and fruits
c) Insects and parasites
d) Tall grasses and leaves
Answer: Tall grasses and leaves
139.) The horn of a rhinoceros is made up of
a) Ivory
b) Bone
c) Keratin
d) Calcium
Answer: Keratin
140.) At what age does the horn of a rhinoceros start to emerge
a) At birth
b) After 2 years
c) From the age of 6 years
d) After reaching adulthood
Answer: From the age of 6 years
141.) A unique habit of the rhinoceros that is mentioned in the chapter
A) Climbing trees
b) Defecating at the same place
c) Flying long distances
d) Swimming in rivers
Answer: Defecating at the same place
142.) How does the rhinoceros influence the grassland ecosystem?
A) By hunting and controlling the predator population
b) By digging up the soil and promoting seed germination
c) By pollinating flowers and aiding in plant reproduction
d) By building nests and shelters for other animals
Answer: By digging up the soil and promoting seed germination
143.) Its the main reason behind the decline in the number of one-horned rhinoceros
a) Habitat destruction
b) Lack of food sources
c) Natural disasters
d) Climate change
Answer: Habitat destruction
144.) The rhinoceros are targeted by poachers
a) For their fur
b) For their meat
c) For their horns
d) For their skin
Answer: For their horns
145.) It’s a belief about rhinoceros horns that has no scientific basis
a) Medicinal properties
b) Magical powers
c) Healing abilities
d) Fertility enhancement
Answer: Medicinal properties
- More MCQ Questions
1.) What are some important roles of plants in the environment?
A) Providing shelter and food for animals
b) Absorbing pollutants and increasing organic content of land
c) Controlling temperature, rainfall, and wind velocity
d) All of the above
Answer: All of the above
2.) A characteristic feature of bamboo plants is
a) Perennial, evergreen plant with solid node and hollow internode
b) Rapid growth rate of 100 cm in 24 hours
c) Irregular flowering patterns
d) All of the above
Answer: All of the above
3.) What happens in bamboo plants when they flower
a) They concentrate on reproductive growth instead of vegetative growth
b) They utilize all their energy for flowering
c) Death follows the flowering phase
d) All of the above
Answer: All of the above
4.) It is the potential consequence of mass flowering in bamboo plants
A) Enormous reproduction of animals like rats
b) Devastation of crops and damage to stored grains
c) Outbreaks of diseases like typhus and plague
d) All of the above
Answer: All of the above
5.) ______ bamboo species exhibits flowering and fruit formation every 30-35 years
A) Bambog
b) Melocanna bambusoides
c) Perennial bamboo
d) Rapid-growing bamboo
Answer: Melocanna bambusoides
6.) These are the chief foods of many critically endangered animals, including the Giant Panda and Red Panda
A) Bamboo stems
b) Leaves of bamboo plants
c) Young stems of bamboo plants
d) All of the above
Answer: All of the above
7.) In which country are the young stems of bamboo used for preparing different delicious dishes
A) China
b) India
c) South Africa
d) Nepal
Answer: India
8.)It is one of the chief raw materials for constructing houses in South Asia and the South Pacific islands
a) Bamboo stems
b) Bamboo leaves
c) Water hyacinth
d) None of the above
Answer: Bamboo stems
9.) Bamboo fibers have a diameter of
a) More than 3 mm
b) Less than 3 mm
c) Exactly 3 mm
d) It varies
Answer: Less than 3 mm
10) What can happen if the population of water hyacinth is not controlled?
A) Increased flow of water
b) Increased sunlight for aquatic plants
c) Decreased flow of water
d) Increased dissolved oxygen in water
Answer: Decreased flow of water
11) Andes mosquitoes mostly propagate in
a) Bamboo plants
b) Water hyacinth plants
c) Sal plants
d) None of the above
Answer: Water hyacinth plants
12) Name a harmful disease that is propagated by a type of snail found in water hyacinth plants
a) Malaria
b) Helminth disease
c) Dengue fever
d) Yellow fever
Answer: Helminth disease
13.) Identify heavy metals that water hyacinth can absorb and help purify polluted water
A) Gold and silver
b) Iron and copper
c) Cadmium and lead
d) Zinc and aluminum
Answer: Cadmium and lead
14) An important role that bacteria inhabiting the roots of water hyacinth play is
A) Absorbing heavy metals
b) Fixing nitrogen
c) Producing biogas
d) Breaking down pollutants
Answer: Fixing nitrogen
15.) What is the primary use of Sal wood
a) Making furniture
b) Making paper
c) Making biogas
d) None of the above
Answer: Making furniture
16) These utensils are made with the leaves of Sal plants in Northern and Eastern India
a) Bowls and plates
b) Cups and saucers
c) Spoons and forks
d) None of the above
Answer: Bowls and plates
17.) Gum derived from the Sal tree are mainly used for
A) Manufacturing resin sticks
b) Polishing shoes
c) Making chocolates
d) Fuel for cooking
Answer: Manufacturing resin sticks
18.) An industry that uses tannin derived from the bark of the Sal tree
A) Leather industry
b) Textile industry
c) Paper industry
d) Pharmaceutical industry
Answer: Leather industry
19.) The respiratory roots of the Sundri plant are called
a) Adventitious roots
b) Stilt roots
c) Tiny roots
d) None of the above
Answer: Adventitious roots
20.) What is the main threat to the Sundri plant in Sunderban?
a) Lack of sunlight
b) Overwatering
c) Deforestation and logging
d) Soil erosion
Answer: Deforestation and logging
21.) Spices are added to cooked food
a) To enhance taste and flavor
b) To increase nutritional value
c) To add color to the dish
d) To improve texture
Answer: To enhance taste and flavor
22.) Which country did Vasco-Da-Gama set sail from in search of the sea route to the “Nation of Spices”?
A) England
b) France
c) Portugal
d) Spain
Answer: Portugal
23.) In the past spices were used for
a) Enhancing the taste of food
b) Acting as a preservative
c) Providing medicinal benefits
d) Adding fragrance to dishes
Answer: Acting as a preservative
24.) Its a chemical substance in cloves that has anti-bacterial properties
A) Eugenol
b) Cinnamon
c) Turmeric
d) Gingerol
Answer: Eugenol
25) Apart from taste, flavor, and preservation, what other use do spices have
a) repel insects
b) add texture to dishes
c) improve digestion
d) provide medicinal benefits
Answer: provide medicinal benefits
26) Exactly which part of the plant is used to obtain cinnamon spice
a) Bark
b) Buds
c) Fruits
d) Leaves
Answer: Bark
27) Name the spice that is obtained from the unopened flower bud of a plant
A) Cinnamon
b) Clove
c) Saffron
d) Ginger
Answer: Clove
28) _____ spice is derived from the floral parts of a plant
a) Saffron
b) Black pepper
c) Mint
d) Nutmeg
Answer: Saffron
29.) It’s a spice which helps in digestion by increasing salivation
A) Cinnamon
b) Clove
c) Ginger
d) Black pepper
Answer: Black pepper
30.) How does black pepper grow
a) As a standalone plant
b) As a shrub
c) As a vine with support from other plants
d) As a tree
Answer: As a vine with support from other plants
31.) A substance which is responsible for the hot taste of black pepper
A) Piperine
b) Cinnamon
c) Gingerol
d) Capsaicin
Answer: Piperine
32.) Besides cooking, black pepper is used for all of the following purposes except
A) Cough relief
b) Toothache remedy
c) Preserving meat
d) Insect repellent
Answer: Insect repellent
33.) What is the primary taste and aroma associated with cinnamon
A) Hot and spicy
b) Sweet and fragrant
c) Bitter and pungent
d) Tangy and sour
Answer: Sweet and fragrant
34) For commercial purpose turmeric is prepared in one of the following way
A) The leaves of the turmeric plant are dried and powdered.
b) The flowers of the turmeric plant are boiled and dried.
c) The bulbs of the turmeric plant are boiled, dried, and powdered.
D) The roots of the turmeric plant are boiled and ground into a paste.
Answer: The bulbs of the turmeric plant are boiled, dried, and powdered.
35.) Turmeric contains_____ in it that gives it its beneficial properties
A) Piperine
b) Eugenol
c) Curcumin
d) Capsaicin
Answer: Curcumin
36) Besides its use in cooking, what are the other uses of turmeric
A) Treating liver diseases
b) Dyeing fabrics and medicines
c) Relieving arthritis pain
d) Controlling cholesterol levels
Answer: Treating liver diseases
37.) The two main types of cardamom are
a) Greater cardamom and lesser cardamom
b) Green cardamom and black cardamom
c) Sweet cardamom and spicy cardamom
d) Indian cardamom and Indonesian cardamom
Answer: Greater cardamom and lesser cardamom
38.) Which spices are typically included in garam masala
a) Clove, cardamom, cinnamon, black pepper, mace, and nutmeg
b) Cumin, coriander, turmeric, ginger, and chili powder
c) Basil, thyme, oregano, parsley, and rosemary
d) Saffron, paprika, garlic powder, onion powder, and bay leaves
Answer: Clove, cardamom, cinnamon, black pepper, mace, and nutmeg
39.) A compound that garlic contains that has antimicrobial properties
A) Curcumin
b) Piperine
c) Allicin
d) Capsaicin
Answer: Allicin
40.) To cure diabetes _____ of neem plant is suggested
a) Stem
b) Leaves
c) Bark of root and stem
d) Seeds
Answer: Leaves
41.) Neem oil can be used for
a) Pain relief for car and toothache
b) Skin diseases treatment
c) Pesticide
d) All of the above
Answer: All of the above
42.) Baelfruit has some medical properties that is acts as a
a) Anti-inflammatory
b) Antiseptic
c) Laxative for constipation
d) Antifungal
Answer: Laxative for constipation
43.) What part of the bael tree has antibiotic properties
a) Leaves
b) Fruit
c) Root
d) All of the above
Answer: All of the above
44.)It is the use of Emblica fruit in preventing anemia and cancer
a) Boosting the immune system
b) Providing antioxidants
c) Enhancing digestion
d) Regulating blood sugar levels
Answer: Providing antioxidants
45) Triphala can be said is
a) An annual herb
b) A type of ayurvedic medicine
c) A purgative for cleaning the alimentary canal
d) A blood-cleanser
Answer:A type of ayurvedic medicine
46.) Name the fruits that are included in Triphala
a) Emblica, Chebulic myrobalan, and Bellerie myrobalan
b) Emblica, Haritaki, and Bahera
c) Emblica, Catharanthus, and Haritaki
d) Emblica, Catharanthus, and Bahera
Answer: Emblica, Haritaki, and Bahera
47.) Identify the alkaloidsthat are present in Catharanthus
a) Raubasine
b) Vincristine
c) Vinblastine
d) All of the above
Answer: All of the above
48.) Mint (Pudina) is a _____ type of plant
a) Annual herb
b) Perennial herb
c) Deciduous tree
d) Shrub
Answer: Perennial herb
49.) One of the effects of mint in our mouth
a) Stimulating salivation
b) Freshening the breath with its aroma
c) Killing bacteria in the mouth
d) Soothing the throat
Answer: Killing bacteria in the mouth
50.) What is the effect of Aloe vera extract on the skin
a) Moisturizes and increases skin elasticity
b) Reduces wrinkles and fine lines
c) Improves blood and oxygen supply to the skin
d) All of the above
Answer: All of the above
Q.(2) Short answer questions.
(1) How much area in India occupied by forests ?
→ 21% of the total land area is occupied by forest in India.
(2) Which year was announced as international year of forest by United Nations ?
→ 2011
(3) Write two benefits man get from forest ?
→
- Control of weather
- Control of temperature.
- As a source of fuel
- Source of food or medicine.
(4) Which physical factors of weather controls the structure of forest ?
→
- Temperature
- Rainfall
- Sunlight
(5) Write the name of two animals found in forest ?
→
- Lion
- Tiger
(6) Write two factors responsible for forest fire ?
→
- Friction of bamboos due to high wind
- Volcanic eruption
- Sparks created by rolling stones.
- Lightning strikes
(7) Write effects of forest fire on CO2 and O2 ?
→The forest fire causes gradually increases the amount of CO2 and decreases the amount of oxygen. Hence temperature increases gradually.
(8) Write effects of forest fire on water retention capacity of soil ?
→ Soil and leaves of forest absorbs almost 50% of the rainwater. Due to forest fire , water cannot be retained anymore by the soil and leaves hence chances of floods gets increases.
(9) What is the correlation between water pollution and forest fire ?
→ Due to forest fire, soil loses it’s capacity to retain the rainwater. Water bodies get polluted by the first rain cause after the forest fire.
(10) Mention the name of so forest in West Bengal
→
- North Bengal
- Mangroves forests of Sundarbans area.
(11) Define mangrove forest ?
→ The Plants community with respiratory roots found in Southern tidal areas of West Bengal called as mangrove forest.
(12) Write the name of the part send out for respiration during the time of high tides by mangrove forests plants ?
→ Pneumatophores
(13) How the mangrove forest plants eliminate the load of excessive salts during high tides ?
→
- By shedding off leaves.
- By glands present in roots and leaves.
(14) Write two names of vertebrate animals ?
→
- Shark
- Whale
(15) Write two names of invertebrate animals ?
→
- Jellyfish
- Starfish
(16) What is photosynthesis ?
→ The process of producing food with the help of sunlight by green plants called as photosynthesis.
(17) What do you mean by bioluminescence ?
→ Even though sunlight cannot penetrate the depth of the ocean water, a light of different kind without heat is visible near the depth called as bioluminescence.
(18) What do you mean by bioluminescent organisms ?
→ Organisms found deep in the ocean who can produce light in their bodies by the chemical reaction called as bioluminescent organism.
(19) Name the pigment found in bioluminescent organism ?
→ Luciferin is a protein bound pigment found in this organism.
(20) Name the enzyme found in bioluminescent organism ?
→ Luciferase is an enzyme found in this organism.
(21) Define plankton?
→The aquatic organisms who do not have ability to swim against the water current called as plankton.
(22) What are the phytoplankton ?
→ They are ability to produce food with the help of sunlight .
(23) What are the zooplanktons ?
→They cannot produce food by themselves and feed on other organisms.
(24) What is kelp ?
→ Kelp is big Marine alga found in shallow part of the ocean.
(25) Mention two examples of phytoplankton ?
→
- Diatoms
- Dinoflagellates
(26) Where we can find zooplankton in the ocean ?
→ They float on the upper layer of the ocean.
(27) How sea anemone looks like ?
→ The organism which have petals of flowers like tentacles . The tentacles have numerous stinging cells which helps for hunting the small fishes and other organisms.
(28) How much arms do octopus have ?
→Eight arms
(29) Write the name of the shark which can eat human beings ?
→Great white shark
(30) Name the factors causing pollution in marine life ?
→
- Oil
- Plastic floating on ocean water after dumping.
- Increase in acidity of ocean water
- Chemical fertilizers and sewage.
(31) Name the cold desert ?
→ Gobi Desert in Asia.
(32) List the animals found in Sahara Desert ?
→
- Owl
- Porcupine
- Deer
- Fox
- Ostrich
(33) Sahara Desert found in which continent ?
→ Africa continent.
(34) List two plants found in desert ?
→
- Cactus
- Joshua plant
(35) Name the animals found in desert ?
→
- Lizard
- Camel
- Gerbil
Also See: Previous Chapter Endocrine System and Adolescence Question Answer