1000+ Animal Kingdom Multiple Choice Question Answer [Solved]
Thursday 9th of March 2023
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1. The following statement are associated with the occurrence of notochord. Identify the incorrect statement.
A. It is present only in larval tail in ascidians.
B. It is replaced by a vertebral column in adult frog.
C. It is absent throughout the life in humans from the very beginning.
D. It is present throughout life in Amphioxus.
Answer : C
A. It is present only in larval tail in ascidians.
B. It is replaced by a vertebral column in adult frog.
C. It is absent throughout the life in humans from the very beginning.
D. It is present throughout life in Amphioxus.
Answer : C
2. Which one of the following groups of animals is correctly matched with its characteristic feature without even a single exception ?
A. Reptilia : possess 3 - chambered heart with one incompletely divided ventricle.
B. Chordata : Possess a mouth provided with an upper and lower jaw.
C. Chondrichthyes : Possess cartilaginous endoskeleton.
D. Mammalia : Give birth to young one.
Answer : C
A. Reptilia : possess 3 - chambered heart with one incompletely divided ventricle.
B. Chordata : Possess a mouth provided with an upper and lower jaw.
C. Chondrichthyes : Possess cartilaginous endoskeleton.
D. Mammalia : Give birth to young one.
Answer : C
3. Which of the following character is absent in all chordates?
A. Diaphragm
B. Coelom
C. Pharyngeal gill clefts
D. Dorsal nerve cord
Answer : A
A. Diaphragm
B. Coelom
C. Pharyngeal gill clefts
D. Dorsal nerve cord
Answer : A
4. The organisms attached to the substratum generally possess
A. one single opening to the digestive canal.
B. cilia on the surface to create water current.
C. radial symmetry.
D. asymmetrical body.
Answer : C
A. one single opening to the digestive canal.
B. cilia on the surface to create water current.
C. radial symmetry.
D. asymmetrical body.
Answer : C
5. Which of the following statements (i – v) are incorrect ?
A. (i) only
B. (iii) only
C. (i) and (iii)
D. (iii) and (iv)
Answer : A
- Circulatory system in arthropods is of closed type.
- Parapodia in annelids helps in swimming.
- Phylum mollusca is the second largest animal phylum.
- Aschelminthes are dioecious.
A. (i) only
B. (iii) only
C. (i) and (iii)
D. (iii) and (iv)
Answer : A
6. Hemichordates have now been placed with the nonchordates, close to echinoderms, because true
A. notochord is absent.
B. pharyngeal gill-slits are lacking.
C. dorsal nerve cord is absent.
D. heart is lacking.
Answer : A
A. notochord is absent.
B. pharyngeal gill-slits are lacking.
C. dorsal nerve cord is absent.
D. heart is lacking.
Answer : A
7. Which of the following sets of animals give birth to young ones?
A. Platypus, Penguin, Bat, Hippopotamus.
B. Shrew, Bat, Cat, Kiwi.
C. Kangaroo, Hedgehog, Dolphin, Loris.
D. Lion, Bat, Whale, Ostrich.
Answer : C
A. Platypus, Penguin, Bat, Hippopotamus.
B. Shrew, Bat, Cat, Kiwi.
C. Kangaroo, Hedgehog, Dolphin, Loris.
D. Lion, Bat, Whale, Ostrich.
Answer : C
8. The given figures of animals (A & B) are distinguished on the basis of symmetry. Select the correct option which shows the type of symmetry and its description against the animals.
A. A : Biradial, organisms is divided into unequal halves by any plane through the central axis.
B. B: Bilateral, body is divided into equivalent right and left halves by only one plane.
C. A: Asymmetrical, organisms is not divided into equal halves by any plane through the central axis.
D. B: Radial, in which any plane passing through the central axis of the body divides the organism into two identical halves.
Answer : B
A. A : Biradial, organisms is divided into unequal halves by any plane through the central axis.
B. B: Bilateral, body is divided into equivalent right and left halves by only one plane.
C. A: Asymmetrical, organisms is not divided into equal halves by any plane through the central axis.
D. B: Radial, in which any plane passing through the central axis of the body divides the organism into two identical halves.
Answer : B
9. In phylum echinodermata, the adult echinoderms are ______A__________ but larvae are _______B______ .
A. A radially symmetrical; B bilaterally symmetrical
B. A bilaterally symmetrical; B radially symmetrical
C. A bilaterally symmetrical; B asymmetrical
D. A metamerically segmented; B asymmetrical
Answer : A
A. A radially symmetrical; B bilaterally symmetrical
B. A bilaterally symmetrical; B radially symmetrical
C. A bilaterally symmetrical; B asymmetrical
D. A metamerically segmented; B asymmetrical
Answer : A
10. Which of the follwoing statement(s) is/are correct?
(i) Organ systems in different group of animals show various patterns of complexities.
(ii) The digestive system in platyhelminthes has only a single opening to the outside of the body that serve as both mouth and anus, and is hence called complete.
(iii) In open type of circulatory system, the blood is pumped out of the heart and the cells and tissues are directly bathed in it.
(iv) In closed type, the blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).
A. Only (i)
B. Both (ii) and (iii)
C. (i), (iii) and (iv)
D. All of these
Answer : C
(i) Organ systems in different group of animals show various patterns of complexities.
(ii) The digestive system in platyhelminthes has only a single opening to the outside of the body that serve as both mouth and anus, and is hence called complete.
(iii) In open type of circulatory system, the blood is pumped out of the heart and the cells and tissues are directly bathed in it.
(iv) In closed type, the blood is circulated through a series of vessels of varying diameters (arteries, veins and capillaries).
A. Only (i)
B. Both (ii) and (iii)
C. (i), (iii) and (iv)
D. All of these
Answer : C
11. Which one of the following categories of animals is correctly described with no single exception in it?
A. In chondrichthyes notochord is persistent throughout life.
B. All mammals are viviparous and possess diaphragm for breathing.
C. All sponges are marine.
D. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
Answer : A
A. In chondrichthyes notochord is persistent throughout life.
B. All mammals are viviparous and possess diaphragm for breathing.
C. All sponges are marine.
D. All reptiles possess scales, have a three chambered heart and are cold blooded (poikilothermal).
Answer : A
12. Which of the following is not a chordate character?
A. Presence of paired pharyngeal gill slits
B. Ventral heart
C. Solid and ventral nerve cord
D. Presence of post-anal tail
Answer : C
A. Presence of paired pharyngeal gill slits
B. Ventral heart
C. Solid and ventral nerve cord
D. Presence of post-anal tail
Answer : C
13. The given figure shows some characteristic features marked as chordates. Identify the correct labelling A,B,C and D.
A. A-Notochord; B-Post-anal part; C-Gill slits; D-Nerve cord
B. A-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits
C. A-Notochord; B-Nerve cord; C-Gill slits; D-Post-anal part
D. A-Gill slits; B-Post-anal part; C-Nerve cord; D-Notochord
Answer : B
A. A-Notochord; B-Post-anal part; C-Gill slits; D-Nerve cord
B. A-Nerve cord; B-Notochord; C-Post-anal part; D-Gill slits
C. A-Notochord; B-Nerve cord; C-Gill slits; D-Post-anal part
D. A-Gill slits; B-Post-anal part; C-Nerve cord; D-Notochord
Answer : B
14. Which of the following animal's body is covered by calcareous shell and unsegmented with a distinct head, muscular foot, and visceral hump?
A. Click to check answer
B. Click to check answer
C. Click to check answer
D. Click to check answer
Answer : C
A. Click to check answer
B. Click to check answer
C. Click to check answer
D. Click to check answer
Answer : C
15. Which of the following class is being correctly described by given statements (i - iv)?
(i) All living members of this class are ectoparasites on some fishes.
(ii) They have a sucking and circular mouth without jaws.
(iii) Circulation is of closed type.
(iv) They are marine but migrate for spawning to fresh water. After spawing, within a few days they die.A. Cyclostomata
B. Chondrichthyes
C. Osteichthyes
D. Amphibia
Answer : A
(i) All living members of this class are ectoparasites on some fishes.
(ii) They have a sucking and circular mouth without jaws.
(iii) Circulation is of closed type.
(iv) They are marine but migrate for spawning to fresh water. After spawing, within a few days they die.A. Cyclostomata
B. Chondrichthyes
C. Osteichthyes
D. Amphibia
Answer : A
16. Which of the following is not the common fundamental feature for animal classification?
A. Germinal layers.
B. Pathway of water transport.
C. Pattern of organization of cells.
D. Serial repetition of the segments.
Answer : B
A. Germinal layers.
B. Pathway of water transport.
C. Pattern of organization of cells.
D. Serial repetition of the segments.
Answer : B
17. Examine the figures A, B and C. In which one of the four options all the items A, B and C are correctly identified ?
A. A - Sycon, B - Euspongia, C - Spongilla
B. A - Euspongia, B - Spongilla, C - Sycon
C. A - Spongilla, B - Sycon, C - Euspongia
D. A - Euspongia, B - Sycon, C - Spongilla
Answer : A
A. A - Sycon, B - Euspongia, C - Spongilla
B. A - Euspongia, B - Spongilla, C - Sycon
C. A - Spongilla, B - Sycon, C - Euspongia
D. A - Euspongia, B - Sycon, C - Spongilla
Answer : A
18. The combination of a true coelom and repeating body segmentation allows the annelids (unlike the anatomically simpler worms) to do which of the following?
A. Attain complex body shapes and thus locomote more precisely.
B. Move through loose marine sediments.
C. Be hermaphroditic.
D. Inject paralytic poisons into their prey.
Answer : A
A. Attain complex body shapes and thus locomote more precisely.
B. Move through loose marine sediments.
C. Be hermaphroditic.
D. Inject paralytic poisons into their prey.
Answer : A
19. Flame cells present in platyhelminthes, are specialized in
A. respiration and absorption.
B. osmoregulation and circulation.
C. respiration and excretion.
D. osmoregulation and excretion.
Answer : D
A. respiration and absorption.
B. osmoregulation and circulation.
C. respiration and excretion.
D. osmoregulation and excretion.
Answer : D
20. Which of the following statement(s) is/are correct regarding class aves?
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm- blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.
A. Both (i) and (iii)
B. Both (i) and (iv)
C. (i), (ii) and (iii)
D. All of these
Answer : D
(i) The forelimbs are modified into wings and the hindlimbs generally have scales and are modified for walking, swimming or clasping the tree branches.
(ii) Heart is completely four-chambered.
(iii) They are warm- blooded (homoiothermous) animals i.e., they are able to maintain a constant body temperature.
(iv) They are oviparous and development is direct.
A. Both (i) and (iii)
B. Both (i) and (iv)
C. (i), (ii) and (iii)
D. All of these
Answer : D
21. Match the phylum given in column - I with the special features present in them given in column - II and choose the correct option.
A. A III; B IV; C V; D II; E I
B. A IV; B III; C V; D II; E I
C. A III; B IV; C II; D V; E I
D. A III; B V; C IV; D II; E I
Answer : A
| Column -I | Column- II |
|---|---|
| (Phylum) | (Special features present) |
| A. Porifera | I. Mammary glands |
| B. Mollusca | II. Cloaca |
| C. Ctenophora | III. Choanocytes |
| D. Amphibia | IV. Radula |
| E. Mammalia | V. Comb plates |
A. A III; B IV; C V; D II; E I
B. A IV; B III; C V; D II; E I
C. A III; B IV; C II; D V; E I
D. A III; B V; C IV; D II; E I
Answer : A
22. A student brought home a strange animal which he found outside under a rock. It had moist skin, a complete digestive tract, a ventral nerve cord, and had gone through torsion. Identify the phylum of the animal.
A. Porifera
B. Annelida
C. Mollusca
D. Echinodermata
Answer : B
A. Porifera
B. Annelida
C. Mollusca
D. Echinodermata
Answer : B
23. In ctenophora, the body bears _______ external rows of ciliated comb plates, which help in locomotion.
A. five
B. six
C. seven
D. eight
Answer : D
A. five
B. six
C. seven
D. eight
Answer : D
24. Which of the following characteristic distinguish arthropoda from annelids and molluscs ?
A. An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.
B. Subdivision of the legs into movable segments.
C. Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.
D. All of the above
Answer : D
A. An external skeleton made of chitin (a polysaccharide) and protein rather than a shell made chiefly of mineral salts.
B. Subdivision of the legs into movable segments.
C. Distinct group of muscles, derived from many body segments, that move the separate parts of the exoskeleton.
D. All of the above
Answer : D
25. Which of the following feature in birds indicates their reptilian ancestory ?
A. Eggs with a calcareous shell
B. Scales on their hind limbs
C. Four-chambered heart
D. Two special chambers-crop and gizzard in their digestive tract
Answer : C
A. Eggs with a calcareous shell
B. Scales on their hind limbs
C. Four-chambered heart
D. Two special chambers-crop and gizzard in their digestive tract
Answer : C
26. Which of the following belong to phylum arthropoda?
A. Bombyx and Apis
B. Laccifer and Anopheles
C. Locusta and Limulus
D. All of the above
Answer : D
A. Bombyx and Apis
B. Laccifer and Anopheles
C. Locusta and Limulus
D. All of the above
Answer : D
27. Aquatic annelids (like Nereis) possess lateral appendages called ______________, which help in swimming.
A. visceral hump
B. parapodia
C. radula
D. spicules
Answer : B
A. visceral hump
B. parapodia
C. radula
D. spicules
Answer : B
28. Identify the figures and select the correct option
A. A - Pseudocoelomate; B - Coelomate, C-Acoelomate
B. A - Coelomate, B - Pseudocoelomate, C- Acoelomate
C. A - Coelomate; B- Acoelomate; C - Pseudocoelomate
D. A - Coelomate; B- Acoelomate; C-Eucoelomate
Answer : B
A. A - Pseudocoelomate; B - Coelomate, C-Acoelomate
B. A - Coelomate, B - Pseudocoelomate, C- Acoelomate
C. A - Coelomate; B- Acoelomate; C - Pseudocoelomate
D. A - Coelomate; B- Acoelomate; C-Eucoelomate
Answer : B
29. In amphibians, respiration occurs through
A. gills
B. lungs
C. skin
D. all of these
Answer : D
A. gills
B. lungs
C. skin
D. all of these
Answer : D
30. Which of the following class is being described by the given statements (i - iv)?
(i) They are found in a variety of habitats- polar ice-caps, deserts, mountains, forests, grasslands and dark caves.
(ii) Most unique mammalian characteristic is the presence of mammary glands by which the young ones are nourished.
(iii) Heart is four-chambered.
(iv) Sexes are separate and fertilization is internal.
A. Reptilia
B. Aves
C. Mammalia
D. Amphibia
Answer : C
(i) They are found in a variety of habitats- polar ice-caps, deserts, mountains, forests, grasslands and dark caves.
(ii) Most unique mammalian characteristic is the presence of mammary glands by which the young ones are nourished.
(iii) Heart is four-chambered.
(iv) Sexes are separate and fertilization is internal.
A. Reptilia
B. Aves
C. Mammalia
D. Amphibia
Answer : C
31. Column-I contains organisms and column-II contains their exeretory structures. Choose the correct match form the options given below.
A. A I; B III; C II; D IV; E V
B. A III; B I; C II; D V; E IV
C. A II; B I; C III; D V; E IV
D. A II; B III; C I; D V; E IV
Answer : D
| Column- I | Column -II |
|---|---|
| (Organism) | (Excretory structures) |
| A. Cockroach | I. Nephridia |
| B. Cat fish | II. Malpighian tubules |
| C. Earthworm | III. Kidneys |
| D. Balanoglossus | IV.Flame cells |
| E. Flatworm | V. Proboscis gland |
A. A I; B III; C II; D IV; E V
B. A III; B I; C II; D V; E IV
C. A II; B I; C III; D V; E IV
D. A II; B III; C I; D V; E IV
Answer : D
32. Which of the following characteristic is probably most responsible for the great diversification of insects on land ?
A. Segmentation
B. Antennae
C. Bilateral symmetry
D. Exoskeleton
Answer : D
A. Segmentation
B. Antennae
C. Bilateral symmetry
D. Exoskeleton
Answer : D
33. Which one of the following statement regarding coelom of given animals is correct?
A. Round worms (aschelminthes) are pseudocoelomates.
B. Molluscs are acoelomates.
C. Insects are pseudocoelomates.
D. Flatworms (platyhelminthes) are coelomates.
Answer : A
A. Round worms (aschelminthes) are pseudocoelomates.
B. Molluscs are acoelomates.
C. Insects are pseudocoelomates.
D. Flatworms (platyhelminthes) are coelomates.
Answer : A
34. Identify the animals shown in the given figures A, B and C from options given below.
A. A - Octopus; B -Asterias, C- Ophiura
B. A - Asterias; B - Ophiura, C- Octopus
C. A - Echinus; B - Octopus C - Ophiura
D. A - Ophiura; B - Echinus, C- Octopus
Answer : A
A. A - Octopus; B -Asterias, C- Ophiura
B. A - Asterias; B - Ophiura, C- Octopus
C. A - Echinus; B - Octopus C - Ophiura
D. A - Ophiura; B - Echinus, C- Octopus
Answer : A
35. Meandrina (brain coral) belongs to phylum
A. porifera
B. coelenterata
C. ctenophora
D. platyhelminthes
Answer : B
A. porifera
B. coelenterata
C. ctenophora
D. platyhelminthes
Answer : B
36. Match the characteristic feature/terms given in column I with the phylum to which they belongs given in column II and choose the correct option.
A. A II; B I; C IV; D V; E III
B. A II; B IV; C I; D V; E III
C. A V; B I; C III; D II; E IV
D. A III; B IV; C I; D V; E II
Answer : D
| Column-I | Column-II |
|---|---|
| (Characteristic feature/term) | (Phylum) |
| A. Choanocytes | I. Platyhelminthes |
| B. Cnidoblasts | II. Ctenophora |
| C. Flame cells | III. Porifera |
| D. Nephridia | IV. Coelenterata |
| E. Comb plates | V. Annelida |
A. A II; B I; C IV; D V; E III
B. A II; B IV; C I; D V; E III
C. A V; B I; C III; D II; E IV
D. A III; B IV; C I; D V; E II
Answer : D
37. The figure given below shows the germinal layers marked as A, B, C and D. Identify the label showing undifferentiated layer and its location?
A. A, Between B & C
B. B, Between A & C
C. C, Between C & D
D. D, Between A & B
Answer : A
A. A, Between B & C
B. B, Between A & C
C. C, Between C & D
D. D, Between A & B
Answer : A
38. Which of the following statements is incorrect ?
A. Prawn has two pairs of antennae.
B. Nematocysts are characteristic feature of the phylum cnidaria.
C. Millipedes have two pairs of appendages in each segment of the body.
D. Animals that belong to phylum porifera are exclusively marine.
Answer : D
A. Prawn has two pairs of antennae.
B. Nematocysts are characteristic feature of the phylum cnidaria.
C. Millipedes have two pairs of appendages in each segment of the body.
D. Animals that belong to phylum porifera are exclusively marine.
Answer : D
39. Identify the figures A, B and C and choose the correct option.
A. A - Male Ascaris, B - Hirudinaria (leech), C- Nereis
B. A - Female Ascaris, B - Nereis, C-Hirudinaria (leech)
C. A - Female Ascaris B- Hirudinaria (leech), C - Nereis
D. A - Male Ascaris, B - Nereis, C- Hirudinaria (leech)
Answer : B
A. A - Male Ascaris, B - Hirudinaria (leech), C- Nereis
B. A - Female Ascaris, B - Nereis, C-Hirudinaria (leech)
C. A - Female Ascaris B- Hirudinaria (leech), C - Nereis
D. A - Male Ascaris, B - Nereis, C- Hirudinaria (leech)
Answer : B
40. Which one of the following features is common in silverfish, scorpion, dragonfly and prawn?
A. Three pairs of legs and segmented body.
B. Chitinous cuticle and two pairs of antennae.
C. Jointed appendages and chitinous exoskeleton.
D. Cephalothorax and tracheae.
Answer : C
A. Three pairs of legs and segmented body.
B. Chitinous cuticle and two pairs of antennae.
C. Jointed appendages and chitinous exoskeleton.
D. Cephalothorax and tracheae.
Answer : C
41. Which of the following statement(s) is/are correct?
(i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals.
(ii) Notochord is an ectodermally derived rod like structure formed on the ventral side during embryonic development in some animals.
(iii) In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm and such a body cavity is called pseudocoelom.
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. All of these
Answer : C
(i) Animals in which the cells are arranged in two embryonic layers, an external ectoderm and an internal endoderm, are called diploblastic animals.
(ii) Notochord is an ectodermally derived rod like structure formed on the ventral side during embryonic development in some animals.
(iii) In some animals, the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches in between the ectoderm and endoderm and such a body cavity is called pseudocoelom.
A. Only (i)
B. Both (i) and (ii)
C. Both (i) and (iii)
D. All of these
Answer : C
42. Which of the following is not a characteristic of phylum echinodermata ?
A. They have a water vascular system.
B. They have an internal skeleton.
C. They are protostomes.
D. They have bilateral symmetry at larval stage.
Answer : C
A. They have a water vascular system.
B. They have an internal skeleton.
C. They are protostomes.
D. They have bilateral symmetry at larval stage.
Answer : C
43. Polyp phase is absent in
A. Hydra
B. Aurelia
C. Physalia
D. Obelia
Answer : B
A. Hydra
B. Aurelia
C. Physalia
D. Obelia
Answer : B
44. Match the terms/feature given in column I with their examples given in column II and select the correct match from the option given below.
A. A - i, B - ii, C - iii, D - iv, E - v
B. A - iii, B - v, C - ii, D - iv, E - i
C. A - iii, B - i, C - v, D - ii, E - iv
D. A - v, B - iv, C - iii, D - i, E - ii
Answer : D
| Column-I | Column-II |
|---|---|
| (Term/Feature) | (Examples) |
| A. Gregarious pest | i. Hirudinaria |
| B. Vector | ii. Planaria |
| C. Oviparous with | iii. Sepia indirect development |
| D. Metameres | iv. Aedes |
| E. High regeneration | v. Locust capacity |
A. A - i, B - ii, C - iii, D - iv, E - v
B. A - iii, B - v, C - ii, D - iv, E - i
C. A - iii, B - i, C - v, D - ii, E - iv
D. A - v, B - iv, C - iii, D - i, E - ii
Answer : D
45. When any plane passing through the central axis of the body divides the organism into two identical halves, the organism is called ___________.
A. radially symmetrical
B. bilaterally symmetrical
C. asymmetrical
D. metamerically segmented
Answer : A
A. radially symmetrical
B. bilaterally symmetrical
C. asymmetrical
D. metamerically segmented
Answer : A
46. Which of the following animal contains respiratory organs like, gills, book gills, book lungs or tracheal system?
A. Click to check answer
B. Click to check answer
C. Click to check answer
D. Click to check answer
Answer : C
A. Click to check answer
C. Click to check answer
D. Click to check answer
Answer : C
47. Refer the following statement and answer the question. 'Name of X is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called Y and umbrella shaped and free swimming is called Z. Identify X, Y, and Z.
A. X - Coelenterate, Y - Polyp, Z - Medusa
B. X - Cnidarian, Y - Medusa, Z - Polyp
C. X - Ctenophora, Y - Radula, Z - Hypostome
D. X - Porifera, Y - Osculum, Z - Radula
Answer : A
A. X - Coelenterate, Y - Polyp, Z - Medusa
B. X - Cnidarian, Y - Medusa, Z - Polyp
C. X - Ctenophora, Y - Radula, Z - Hypostome
D. X - Porifera, Y - Osculum, Z - Radula
Answer : A
48. The transition from aquatic to terrestrial lifestyles required many adaptations in the vertebrate lineage. Which of the following is not one of those adaptations ?
A. Switch from gill respiration to air-breathing lungs.
B. Improvements in water resistance of skin.
C. Alteration in mode of locomotion.
D. Development of feathers for insulation.
Answer : D
A. Switch from gill respiration to air-breathing lungs.
B. Improvements in water resistance of skin.
C. Alteration in mode of locomotion.
D. Development of feathers for insulation.
Answer : D
49. The given figures (A & B) shows the germinal layer. The animals having structures shown in the figures are respectively called
A. diploblastic, triploblastic
B. triploblastic, diploblastic
C. diploblastic, diploblastic
D. triploblastic, triploblastic
Answer : A
A. diploblastic, triploblastic
B. triploblastic, diploblastic
C. diploblastic, diploblastic
D. triploblastic, triploblastic
Answer : A
50. Which of the following is a living fossil?
A. Balanoglossus
B. Echinus
C. Ancylostoma
D. Limulus
Answer : D
A. Balanoglossus
B. Echinus
C. Ancylostoma
D. Limulus
Answer : D
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