NCERT Exemplar Solution Class 11 Biology Chapter 4
NCERT Exemplar Solution Class 11 Biology Chapter 4 Animal Kingdom all Questions Answer Solution. NCERT Exemplar Class 11 Biology Chapter 4 Solution PDF.
NCERT Exemplar Solution Class 11 Biology Chapter 4: Overview
NCERT Exemplar Solution Class 11 Biology Chapter 4 |
|
Board |
NCERT |
Topic |
Exemplar Problem Solution |
Class |
11 |
Subject |
Biology |
Chapter |
4 |
Chapter Name |
Animal Kingdom |
NCERT Exemplar Solution Class 11 Biology Chapter 4 Animal Kingdom
Multiple choice questions-
1.) In some animal groups, the body is found divided into compartments With serial repitition of at least some organs. This characteristic feature Is called
a.) Segmentation
b.) Metamerism
c.) Metagenesis
d.) Metamorphosis
Answer: b. Metamrism. It is segmentation of animal body part into external and internal Parts segmentation is division in to rpetative parts .metagenesis is the formation of animal or plant body metamorphosis stage of life cycle or organism for growth .
2.) Given below types of cells present in some animals. Which of theFollowing cells can differentiate to perform different functions?
a.) Choanocytes
b.) Interstitial cells
c.) Gastrodermal cells
d.) Nematocytes
Answer: b. Intertitial cells, Interstitial cells have ability to totipotens they can form the entire organ from the broken part; others cells cannot perform differentiation function.
3.) Which one of the following sets of animals share a four chamberedHeart?
a.) Amphibin, reptiles, Birds
b.Corcodile, birds, Mammals
c.Crocodiles, Lizards, Turtles
d.Lizards, Mammals, Birds.
Answer: b.Corcodile, birds and mammals, This group have four chambered Heart, other groups contains reptiles and amphibians have three chambered.
4.) Which of the following pairs of animals has non glandular skin
a.) Snake and Frog
b.) Chameleon and Turtle
c.) Frog and Pigeon
d.) Crocodile and Tiger
Answer: b. Chameleon and Turtle, They have the non grandular skin.
5.) Birds and mammmals share one of the following characteristics asCommon feature.
a.) Pigmented skin
b.) Pneumatic bones
c.) Viviparity
d.) Warm blooded
Answer: d. warm blooded, Warm blooded body is the characristics features of birds and mammals; other character have differences,but not share similarity.
6.) Pigmented one of the following sets of animals belong to a single taxonomicGroup?
a.) Cuttlefish, Jellyfish, Silverfish, Dogfish, Starfish
b.) Bat, Pigeon, Butterfly
c.) Monkey, Chimpanzee, Man
d.) Silkworm, Tapeworm, Earthworm
Answer: c. Monkey, Chimpanzee, Man, They belong to single taxonomic Group as they shared common characteristic as compared with bat, butterfly and fishes.
7.) Which one of the following statements is incorrect?
a.) Mesogliais present in between ectoderm and endoderm in Obelia.
b.) Exhibits radial symmetry Asterias
c.) Fasciola is a pseudocoelomate animal
d.) Tania is a triploblastic animal
Answer: c. Fasciola is a pseudocoelomate animal, Fasciola is a pseudocolomate animal is the incorrect statement because Fasciola is ascoelomatedon’t have body cavity.
8.) Which one of the following statements is incorrect?
a.) In cockroaches and prawns excretion of waste material occurs through malpighian tubules.
b.) In ctenophores, locomotion is mediated by comb plates.
c.) In Fasciola, flame cells help in excretion
d.) Earthworms are hermaphrodites and yet cross fertilization take Place among them.
Answer: a.In cockroaches and prawns excretion of waste material occurs through malpighian tubules, they have excretory structure.
9.) Which one of the following is oviparous?
a.) Platypus
b.) Flying fox (Bat)
c.) Elephant
d.) Whale
Answer: a.Platypus , Platypus is a oviparous,rest of the animal are viviparous.
10.) Which one of the following is a non-poisonous snake?
a.) Cobra.
b.) Viper
c.) Python
d.) Frait
Answer: c.Python, Python is not a poisonous snake; other snake extremely poisonous.
11.) Match the following list of animals with their level of organisation.Division of Labour Animal
Column I Column II
A.) Organ leveli i.. Pheretima
B.) Cellular aggregate level. ii. Fasciola
C.) Tissue level . iii.Spongilla
D.) Organ system level iv. Obelia
Choose the correct match showing division of labour with animal example.
a.) I-B, ii-C, iii-D, and iv-A
b.) I-B, ii-D, iii-C, and iv-A
c.) I-D, ii-A, iii-B, and iv-C
d.) I-A, ii-D, iii-C, and iv-B
Answer: c.Organ level – Obelia
Organ aggregate level- Pheretima
Tissue level-Fasciola
Organ systems level- Spongilla.
12.) Body cavity is the cavity present between body wall and gut wall. In Some animals the body cavity is not lined by mesoderm. Such animals Are called
a.) Acoelomate
b.) Pseudocoelomates
c.) Coelomates
d.) Haemocoelomates
Answer: b.Pseudocelomate, Because mesoderm is absent in case of pseudocolomate.
13.) Match the column A with column B and choose the correct option
Column I Column II
A.) Poriferai. Canal system
B.) Aschelminthes. ii. Water-vascular system
C.) Annelidaiii. Muscular pharynx
D.) Arthropoda. iv. Jointed appendages
E.) Echinodermata. v. Metameres
a.) A-ii, B-iii, C-v, D-iv, E-i
b.) A-ii, B-v, C-iii, D-iv, E-i
c.) A-i, B-iii, C-v, D-iv, E-ii
d.) A-i, B-v, C-iii, D-iv, E-ii
Answer: c.A-i,B-iii ,C-v, D-iv, E- ii.
Porifera-Canal system
Asschelminthes- Muscular pharynx
Annelida- Metameres
Arthropoda- Jointed Appendages.
Echinodermata-Water vascular system.
VERY SHORT ANSWER TYPE QUESTIONS
1.) Identify the phylum in which adults exhibit radial symmetry and larvaExhibit bilateral symmetry.
Answer: The phylum echinodermata exhibit radial symmetry and larva Exhibit bilateral symmetry.
2.) What is the importance of pneumatic bones and air sacs in Aves?
Answer: The structure of pneumatic bones are very important in birds for the flight and reduce body weight.They have aerodynamic lungs.
3.) What is metagenesis? Mention an example which exhibits lung Phenomenon.
Answer: metagenesis can be defined as formation of animal or plant body parts by asexual mechanism.for example: Obelia.
4.) What is the role of feathers?
Answer: Feathers are the external or outer covering present in birds. Fethers are useful for the following purpose
1.) It gives shape to the wings.
2.) For regulation of body temperature.
5.) Which group of chordates possess sucking and circular mouth withoutJaws?
Answer: Cyclastomata are the group of chordates possess the sucking organ called as tentacles.
6.) Give one example each for an animal possessing placoid scales and thatWith cycloid scales.
Answer: Placoid scales can be termed as hard microscopic covering compound of denture present in cartilaginous fishes and cycloid scales are flexible in nature, present in bony fishes.
7.) Mention the modifications in reptiles required for terrestrial mode of life.
Answer: Modification in reptiles are
1.) They have internal mode of fertilization.
2.) Reptiles have dry body covered with scales.
8.) Mention one example. each for animals with chitinous exoskeleton and
Those covered by a calcareous shell.
Answer: Usually chitinous exoskeleton is present in Arthropods and Calcareous shell is major characristics of Mollusca.
9.) What isthe role of radula in molluscs?
Answer: In Mollusca, Rodula is present for the purpose scrapping and take the food by scratching.
10.) Name the animal, which exhibits the phenomenon of bioluminescence.
Mention the phylum to which it belongs.
Answer: Bioluminescence phenomenon is usually present in phylum-Ctennophores for production of light.
11.) Write one example each of the following in the space provided.
- Cold blooded animal ________________________
- Warm blooded animal ________________________
- Animal possessing dry and cornified skin _______________
- Dioecious animal _____________________
Answer: a. Crocodile b.Elephant. c. Tortoise d.Roundworm.
12.) Deferentiate between a diploblastic and a triploblastic animal.
Answer: The animal which contains two embryonic layers such asectodermand endoderm are called as Diploblastic animal. Those of which have three embryonic layers ectoderm, mesoderm, Ectoderm are called Triploblastic animal.
13.) Give an example of the following
a.) Round worm
b.) Fish possessing poison sting
c.) A limbless reptile/ amphibian
d.) An oviparous mammal
Answer: a.) Roundworm- Ascaris
b.) Fiah possessing poison sting- Tygon.
c.) A limbless reptile/ amphibian- Ichtyophis
d.) An oviparous mammals- Duct billed Platypus.
14.) Provide appropriate technical term in the space provided.
Blood-filled cavity in arthropods ________________________
a.) Blood-filled cavity in arthropods __________________________.
a.) Free-floating form of cnidaria _____________________________.
b.) Stinging organ of jelly fishes ______________________________.
c.) Lateral appendages in aquatic annelids ___________________.
Answer:
a.) Blood-filled cavity in arthropods. ____Heamolyph______________
b.) Free-floating form of cnidaria ___Mollusca__________________________.
c.) Stinging organ of jelly fishes ___________Nematocytes___________________.
d.) Lateral appendages in aquatic annelids ____Paropodia_______________.
15.) Match the following:
Animals Locomotory Organ
a.) Octopus i. Limbs
b.) Crocodile ii. Comb plates
c.) Catla iii. Tentacles
d.) Ctenoplana iv. Fins
Answer: a- iii. b-i c-iv d-ii
Because, Octopus has tentacles for locomotion , crocodile use, limbs for locomotion catta used fins and ctenophera use comb plates.
SHORT ANSWER TYPE QUESTIONS
1.) Differentiate between:
a.) Open circulatory system and closed circulatory system
b.) Oviparous and viviparous characteristic
c.) Direct development and Indirect development
Answer: a.) Open circulatory system and Closed circulatory system.
Open circulatory system |
Closed circulatory system |
1.) Blood circulation take place in sinus. | 1.) Blood circulation take place in vessels such as veins and arteries. |
Example-Snails |
Example- Annelids. |
b.) Oviparous and Viviparouscharacristics.
Oviparous characristics |
Viviparous characristics |
1.) Animals which kay eggs called as viviparous animal. |
1.) Animal which gives birth to young are called as viviparous animal. |
Example- Fishes |
Example- Mammals |
c.) Direct development and Indirect development
Direct development |
Indirect development |
1.) Direct development is the series of stages such as egg, larva, pupa and adult. |
1.) It is found in lower animal and contains sexual larval stages. |
2.) Sort out of the animals on the basis of their symmetry (radial or bilateral)Coelenterates, ctenophores, annelids, arthropods, and echinoderms.
Answer: Radial symmetry is the division in to two equal parts , which is found in coelonterates, ctenophoras , Echinoderms. Bilateral symmetry can be defined as division into two equal parts and median can pass through it. Example- Annelids and Arthropods.
3.) There has been an increase in the number of chambers in heArthropodsEvolution of vertebrates. Give the names of the class of vertebrates havingTwo, three or four-chambered heart.
Answer: Two chambered heart consist of one atrium and one ventricle , which is present in fishes. Both the oxygenated and deoxygenated blood mixing take place.Three chambered heart consist of two auricle and one ventricle . For example , Aphibia . Four chambered heart consist of two auricle and two ventricle present in mammals.
4.) Fill up the blank spaces appropriately
Phylum/class |
Excretory organ | Circulatory system | Respiratory system |
Arthropods |
Lungs/Gills/Tracheal system |
||
Nephridia |
Closed | Skin /Parapodia | |
Metanephridia | Open |
|
|
Amphibia |
Closed |
Lung |
Answer:
Phylum |
Excretory organ | Circulatory system | Respiratory system |
Arthropods | Malpighian tubules | Open |
Lungs/Gills/Tracheal system |
Annelida |
Nephridia | Closed | Skin/Parapodia |
Mollusca | Metanephridia | Open |
Lungs/Gills/Tracheal system. |
Amphibia |
Mesonephric kidney | Closed |
Lungs |
5.) Match the following
a.) Amphibiai. Air bladder
b.) Mammals ii. Cartilaginous notochord
c.) Chondrichthyes iii. Mammary glands
d.) Ostichthyes iv. Pneumatic bones
e.) Cyclostomata v. Dual habitat
f.) Aves vi. Sucking and circular mouth without jaws.
Answer: A-v, B-ii, C- ii. D- i, E-vi F-iv
Amphibia have dual habitat terrestrial and aquatic Mammals have mammary glands for production of milk. Chandrichthyes posses cartigenousnotochord. Osteichthyes contain air bladder . Cyclostomataactvassucking organ. Aves posses pneumatic bones.
6.) Endoparasites are found inside the host body. Mention the special Structure, possessed by these and which enables them to survive inThose conditions.
Answer: Endoparasitesfound in the body such as liver auke . They possess special Structure such as.
1.) They have anaerobic respiration.
2.) Digestive organ are absent.
3.) They lack the locomotory organ.
4.) Reproductive system is well developed.
7.) Match the following and write correct choice in space providedAnimal Characteristics
a.) Pila i. Jointed appendages
b.) Cockroach ii. Perching
c.) Asterias iii. Water vascular system
d.) Torpedo iv. Electric organ
e.) Parrot v. Presence of shell
f.) Dog fish vi. Placoid scales
a.) ____________________, b.) ____________________, c.) ____________________
d) ________________________, e.) ____________________, f.) ____________________
Answer: a-v , b- I, c-iii d-iv e-ii f-v
8.) Differentiate between:
a.) Aceolomate and pseudocoelomate
b.) Notochord and nerve cord
c.) Polyp and medusa
Answer:
a.) Aceolomate and pseudocoelomate
Aceolomate |
Pseudocoelomates |
The coelom is absent are refferd to as acoelomate. | Absence of mesoderm called pseudocolomate. |
Example- Flatworm. | Example- Roundworms. |
b.) Notochord and nerve cord
Notochord | Nerve cord |
It is present in between CNS (Central Nervous system) and alimentary canal. | Nerve cord is the part of CNS (Central Nervous system) |
In case of vertebrates notochord is present | In case of intermidiate nerve cord is present. |
c.) Polyp and medusa
Polyp |
Medusa |
It is cylindrical shaped |
It is umbrella like shaped. |
By asexual method polyp lead to formation of medium. |
By sexual mechanism medulla forms polyp. |
9.) Give the characteristic features of the following citing one example of each
a.) Chondrichthyes and ostichthyes
b.) Urochordata and cephalochordata
Answer: a.) Chondrichthyes-1.These animal are cartilaginous .
2.) They have tough skin and placial scales are present.
3.) Air bladder is absent
4.) They are cold blooded animal .
5.) These are predacious.
Osteichthyes- 1.Air bladder is present.
2.) Fertillization is external
3.) Two chambered heart is present.
4.) They possess marine and freshwater habitat.
5.) Direct development is present.
b.) Urochordata- 1.Post anal tail is present.
2.) Notochord can be present in larval tail.
3.) Pharyngeal slits are present.
Cephanochordata- 1. They have external fertilization.
2.) Notochord present from heart to tail.
3.) connective tissue is present.
10.) Mention two similarities between
a.) Aves and mammals
b.) A frog and crocodile
c.) A turtle and pila
Answer: a.) Aves and mammals both are warm blooded animals called as hemootherms. They both have four chambered heart.
b.) Frogand crocodile, these both are clod blooded animals called aspolicothermic. They lay the eggs so called as oviparous animal.
c) Turtle and pila- These both contains dry skin and Scales on the body.
11.) Name
a.) A limbless animal
b.) A cold blooded animal
c.) A warm blooded animal
d.) An animal possessing dry and cornified skin
e.) An animal having canal system and spicules
f.) An animal with cnidoblasts
Answer: a.) A limbless animal- Ichtyophis
b.) A cold blooded animal- Frog
c.) A warm blooded animal – Aves
d.) An animal possessing dry and cornifiedskin – Naka naja (Snake)
e.) An animal having canal system and spicules – Sponge
f.) An animal with cnidoblasts – Obelia.
12) Give an example for each of the following
a.) A viviparous animal
b.) A fish possessing a poison sting
c.) A fish possessing an electric organ
d.) An organ, which regulates buoyancy
e.) Animal, which exhibits alternation of generation
f.) Oviparous animal with mammary gland
Answer:
a.) A viviparous animal -All mammals
b.) A fish possessing a poison sting – Trygon
c.) A fish possessing an electric organ – Torpedo
d.) An organ, which regulates buoyancy – Ostrichthyes
e.) Animal, which exhibits alternation of generation –Aurelia from phylum cnidarian.
f.) Oviparous animal with mammary gland
13.) Excretory organs of different animals are given below. Choose correctlyAnd write in the space provided.Animal Excretory Organ/Unit
a.) Balanoglossusi. Metanephridia
b.) Leech ii. Nephridia
c.) Locust iii. Flame cells
d.) Liver fluke iv. Absent
e.) Sea urchin v. malpighian tubule
f.) Pila vi. Proboscis gland
a.) ____________________, b.) ____________________, c.) ____________________
d.) ____________________, e.) ____________________, f.) ____________________
Answer: A-vi, B- ii.,C-v, D-iii, E-vi, F-i
LONG ANSWER TYPE QUESTIONS
1) Give the three major differences between chordates and non-chordates andDraw a schematic sketch of a chordate showing those features.
Answer:
Chordates |
Non- Chordates |
1.) chordates contain notochord in their life cycle. | 1.) Non-Chordates not possess notochord in their life cycle. |
2.) These organisms characterisedby presence of tail. | 2.) Theseorganism characterisedby absence of tail. |
3.) Heart is in ventral position. | 3.) Heart is in dorsal position. |
2.) What is the relationship between germinal layers and the formation ofBody cavity in case of coelomate, acoelomates and pseudocoelomates?
Answer: The organisms which contains concentric ring arrangement in their body plan, they organisms have germinal layer . Germinal layers are made up of three embryonic layers such as ectoderm, mesoderm and endoderm. According to this embryonal layers , especially mesoderm, these organisms divided into three types such as coelomate, pseudocolomate and acoelomate. On the basis of presence of mesoderm. The organism which contains mesoderm are called coelomate. Example-Arthropoda . The scattered fused ectoderm, endoderm are present called as pseudocolomate. Example- Ascaris. The organism which lacks body cavity are called acoelomate. Example: Plathelminthes.
3.) Comment upon the habitats and external features of animals belongingTo class, amphibia and reptilia.
Answer: Class- Amphibia- 1.) The amphibians are ectothermic that is cold blooded anima.
1.) These animals have three chambered heart , which contains two atrium and one ventricle.
2.) These animals can live in dual habitat such as terrestrial and aquatic.
3.) Their skin is moist and thin contain mucus.
4.) They are oviparous animal. For example- Frog and Salamander.
Class – Reptilia- 1.) These animals are cold blooded or also called as poikilothermic .
2.) They have terrestrial habitat.
3.) Reptile has three chambered heart contain two atrium and one ventricle.
4.) They make a movement by crawling and creeping.
5.) They have well developed lungs.
6.) Reptiles have internal fertilization .
7.) These animals are oviparous. For example- Cobra, Turtle.
4.) Mammals are most adapted among the vertebrates. Elaborate.
Answer: Yes, mammals are most adapted among the vertebrates because
1.) They are warm blooded animals. Also called as homeorherm so, that they can adapt to changing environment.
2.) They have ability to live in various habitat such as terrestrial , aquatic and mountain.
3.) For the purpose of locomotion they have a pair of limbs so that walking , swimming and flying is possible.
4.) Mammals have mammary glands.
5.) Well developed brain is present.
6.) Oil secreting glands are present.
7.) These animals are viviparous and direct development take place. Example- Rat, dog, kangaroo.