Here in this post we provided NCERT Exemplar Problem Class 7 Science Weather, Climate and Adaptation of Animals to Climate Chapter 7 Full Explanation by group of Science Experts. We have provided here each questions answer with reason behind the answer.
Hope it help you!
Weather, Climate and Adaptation of Animals to Climate Class 7 Exemplar full Explanation:
-
Multiple choice Questions
1) The maximum mad minimum temperature displayed daily in the weather bulletin refer to the –
a) Highest day temperature and lowest night temperature of the day.
b) Highest day temperature and highest temperature of the month.
c) Temperature recorded at 12 noon and at mid night (00.00 hrs. )
d) Average highest temperature of day and average lowest temperature of night .
Answer:- a) Highest day temperature and lowest night temperature of the day.
2) Out of the given definitions, which is the most appropriate definition of climate ?
a) Changes in weather conditions in a year.
b) Average weather pattern of many years.
c) Change in weather pattern in a few years.
d) Weather conditions during summer.
Answer:- b) Average weather pattern of many years.
Climate is the average weather pattern of many years . It can be say that from 25 years the climate is cold or hot over a certain place.
3) Which of the following briefly describes the desert climate?
a) Hot and humid
b) Dry and humid
c) Hot and dry
d) Hot and wet
Answer:-c) hot and dry
Desert climate is hot and dry most of the time in the year.
4) Paheli went to a wildlife sanctuary where she saw dense vegetation of trees, shrubs, herbs and also a verity of animals like monkeys, birds, Elephant, snakes , frogs , etc. The most likely location of this sanctuary is in the –
a) Temperature region
b) Tropical region
c) Polar region
d) Coastal region
Answer:- b) Tropical region
Tropical regions contains all the above things in one area.
5) Given below are some adaptive features of animals.
a) Layer of fat under the skin
b) Long , curved, and sharp claws
c) Slippery body
d) Thick white fur
Which of them are the adaptive features of a polar bear ?
a) I) only. b) I and II only
C) I,II and III only d) I , II and IV only
Answer:- d) I , II and IV only
The adaptive features of the animals are layer of fat under the skin , long curved and sharp claws and thick white fur .
6) Which of the following statement is incorrect for penguins?
A) They huddle together
B) They cannot swim
C) They have webbed feet
D) They have streamlined body
Answer:- b) they cannot swim
Penguins can swim very well. They are good swimmers.
7) Read the following environmental conditions of tropical rain forests,
I) Hot and humid climate
II) Unequal lengths of day and night
III) Abundant rain fall.
IV) Abundant light and moisture.
Identify the conditions from the above list that are responsible for the presence of large number of plants and animals on tropical rain forests.
a) I and II b) I and III
C) I, III and IV d) II and IV
Answer:- c) I , III and IV
Tropical rain forest have hot and humid climate, abundant rain fall, and abundant light and moisture which is responsible for the large number of plant and Animals on the region.
8) The coldest region on earth is the –
a) Polar region
b) Tropical region
c) Temperature region
d) Coastal region
Answer:-a) polar region
The coldest region on the earth is polar region.
9) Choose the odd one from the following options :
A) Thick layer of fat under the skin
B) White fur
C) Long grasping tail
D) Wide and large feet with sharp claws.
Answer:- c) Long grasping tail .
Thick layer of fat under the skin , white fur and wide and large feet with sharp claws these are the adaptation of the polar bears. But polar bears don’t have long grasping tail.
Very Short Answer Questions
10) “A fish dies when taken out of water whereas a wall lizard will die if kept under water.” Mention the term used to describe sick abilities that allow fish and lizard to survive in their respective habitats.
Answer:-A fish dies when taken out of water while a wall lizard will die if kept under water this ability to survive in their respective habitats is known as Adaptation. Adaptation is the features and habits which help animals to adapt to their surroundings. This is the process of evolution. Animals during evolution process adapt the things which are suitable to their survival to live in that surrounding this is adaptation. Thus the lizard can survive in open air not in water as well as fish cannot survive without water.
11) Give one example of an animal that can live both in water and on land .
Answer:- Amphibians such as frog, toad , snake etc can live both in water and on land. These animals have ability to survive in both the condition. These animals can breath in air with lungs as well in water by their skin. Thus in both the condition they can survive.
12) State whether the following statements are true or false. Correct the false statement.
a) It is easy to predict weather rather than climate.
Answer:- False.
It is more easy to predict the climate than the weather.
b) Since very few prey are available, polar bear does not need to have strong sense of smell.
Answer:- False.
Polar bear need to have a strong sense of smell because very few prey are available over there.
c) Penguins stick together to fight the cold polar climate.
Answer:- True.
d) Tropical rain forests are cool and humid throughout the year because of heavy rains all the time.
Answer:- False.
Tropical rain forests are hot and humid all the year due to heavy rains all the time.
13) Unscramble the following words using the hints given against them.
i) MATLICE
ii) AROPL
iii) TREHEOMRET
iv) UHIDYTMI
Answer:-
1) CLIMATE
2) POLAR
3) THERMOMETER
4) HUMIDITY
-
Short Answer Questions
14) Match the animals mentioned in column I with their characteristics features given column II.
Column I | Column II |
a) Red eyed frog | i) Very sensitive hearing |
b) Penguin | ii) Streamlined body |
c) Tiger | iii) Silver – white mane |
d) Lion – tailed macaque | iv) Sticky pads on feet |
Answer:-
A)Red eyed frog →iv) sticky pads on feet
B)Penguin→ ii)streamlined body
C)Tiger→ i)very sensitive hearing
D)Lion- tailed
Macaque→ iii)silver – white mane
15) Why is it difficult to predict the weather of a place while it is easy to predict it’s climate ?
Answer:- weather is day to day condition of an atmosphere of certain place which is always fluctuating. There are always changes in temperature, humidity , wind speed , rainfalletc. of a place . This is known as weather. Therefore it is difficult to predict the weather of a place.
Climate is the average of the weather pattern of certain place. It is taken over the longer time, we can say 25 or more years is the climate of the place. If we find that temperature of the place is low most of the time then we can say that the climate of that place is cold. Thus it is easy to predict the climate.
16) Name two animals each that live in polar region and tropical rain forests.
Answer:-
polar region→ polar bear, penguin and reindeer
Tropical regions→ elephantsand red eyed frog
17) Write two common adaptive features of a polar bear which help in keeping it warm.
Answer:- polar bears are found in the polar regions where the extreme climate is present. These polar regions are mostly covered with snow . The weather is very cold for most of the year. There is no sun rise for six months and remaining six months no sun rise. Temperature can be as low as -37°C. Polar bears are Adapted to these conditions. Polar bears are Adapted with white furs. Due to white furs they are not visible to their predators in the white snowy background. These two thick layer of fur help them in the extreme cold. Also polar bears have developed a layer of fat under the skin. They have strong sense of smell to catch the prey for food.
18) Mention two adaptive features of penguin that help it in swimming.
Answer:- Penguin is the animal Living in the polar regions . Penguin have white colour along with some black coat. White colour merges with the white background . They huddled together this process keep them warm. They have adapted with thick skin and also lot of fat . This protect them form the cold . Penguins are good swimmers. They have adapted to the streamlined body. They have webs on feet which make them a good swimmer.
19) Differentiate between :
I) Weather and climate
Answer:- Weather is the daily up and down intemperature and Humidity etc.
While climate is the average weather of a certain place from longer time.
II) Humidity and rainfall
Answer:- wetness in the atmosphere due to the moisture containis Humidity of that place.
while rainfall is the water that fall from clouds on the ground.
III) Climate of polar region and tropical rain forest.
Answer:- Polar region have severe cold for most part of the year
While tropical rain forests is hot and Humid for the most of the time in year.
IV) Maximum and minimum temperature of the day.
Answer:- maximum and minimum temperature of the day indicate Highest temperature of the day and lowest temperature of the day.
• Long Answer Questions
20) Fill in the blanks in the paragraph given below.
Weather of a place is the day-to-day condition of the _____(a)_____, with respect to _____(b)______, ______(c)______, _______(d)______,______(e)______ at the place, while climate is the ________(f)______ weather pattern taken over many years .
Answer:-
Weather of a place is the day-to-fay condition of the atmosphere , with respect to temperature, humidity, rainfall, windspeed at the place , while climate is the average weather pattern taken over many years.
21) Given below is a list of climate conditions and some examples of animals. Read them carefully and place the items in the relevant columns as shown.
Penguin, Gorilla, Monkeys, Raindeer, Assam, Greenland, Sun does not rise for six months. Hot and humid climate, days and nights are almost equal in length throughout the year, winter temperature around -37°C , western Ghats
Answer:-
Tropical Rain Forest | Polar region |
1) Hot and Humid climate | A)Penguin |
2) Gorilla | B) Reindeer |
3) Monkey | C) Greenland |
4) Assam | D) Sun does not rise for fix months |
5) Day and night are almost equal in length throughout the year. | E) winter temperature around -37°C. |