NEET Biology Animal Kingdom MCQs Set 14

Biology Objective Questions and Answers: Animal Kingdom

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Multiple Choice Questions

Question 1: Rana and Hyla are amphibians. Which characters do they have?
(a) A tympanum represents the ear
(b) They are cold blooded
(c) They have moist skin without scales
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. All the three statements are true for amphibians.

Teacher's Note:
1. Amphibians are poikilothermous.

Question 2: Which character is found only in Aves?
(a) A cover of feathers all over the body
(b) They are warm blooded
(c) They are oviparous with direct development
(d) They have a four-chambered heart
Show Answer & Explanation

Answer: (a) A cover of feathers all over the body

Explanation:
1. Feathers are unique to birds
2. Warm blood and four-chambered heart are also seen in mammals.

Teacher's Note:
1. Feathers are the exclusive feature.

Question 3: The distinguishing characters of mammals are:
(a) Diaphragm in the body cavity
(b) Mammary glands in females
(c) Body covered by hair
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Mammals have a diaphragm, mammary glands and hair.

Teacher's Note:
1. The diaphragm separates thorax and abdomen.

Question 4: Which characters distinguish reptiles from amphibians?
(a) 12 pairs of cranial nerves
(b) Monocondylic skull
(c) Amniotic eggs
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Reptiles have 12 cranial nerves, a monocondylic skull and are amniotes.

Teacher's Note:
1. Amphibians have 10 pairs of cranial nerves.

Question 5: Which statement is correct for Bufo, Rana, Rattus and Camelus?
(a) All are poikilotherms
(b) All have 12 pairs of cranial nerves
(c) All have a dicondylic skull
(d) Sexes are separate and fertilisation is internal
Show Answer & Explanation

Answer: (c) All have a dicondylic skull

Explanation:
1. Amphibians and mammals have a dicondylic skull
2. Frogs and toads are poikilotherms with external fertilisation, and have 10 pairs of cranial nerves.

Teacher's Note:
1. Dicondylic means two occipital condyles.

Question 6: Which is NOT a characteristic of cyclostomes?
(a) Sucking circular mouth without jaws
(b) Cranium and vertebral column are bony
(c) Circulation is closed
(d) Marine but migrate to freshwater for spawning
Show Answer & Explanation

Answer: (b) Cranium and vertebral column are bony

Explanation:
1. In cyclostomes the cranium and vertebral column are cartilaginous.

Teacher's Note:
1. Cyclostomes are Petromyzon and Myxine.

Question 7: Which are correctly matched? A. Protochordates : Lancelet B. Amniotes : Struthio, Aptenodytes, Chelone, Equus C. Cartilaginous fishes : Scoliodon, Trygon, Hippocampus D. Tunicates : Salpa, Doliolum, Ascidia
(a) A, B and D
(b) A, C and D
(c) A, B and C
(d) Only A and B
Show Answer & Explanation

Answer: (a) A, B and D

Explanation:
1. Hippocampus is a bony fish, so C is wrong
2. The other matches are correct.

Teacher's Note:
1. Hippocampus is the sea horse.

Question 8: Which class is correctly matched with its characters?
(a) Aves : hind limbs generally have scales and are modified for walking
(b) Reptilia : 10 pairs of cranial nerves and dicondylic skull
(c) Cyclostomata : skin covered with scales
(d) Osteichthyes : gill slits separate and without operculum
Show Answer & Explanation

Answer: (a) Aves : hind limbs generally have scales and are modified for walking

Explanation:
1. In birds the hind limbs have scales and are adapted for walking, swimming or clasping.

Teacher's Note:
1. Reptiles have 12 cranial nerves and a monocondylic skull.

Question 9: What is true for Psittacula, Ornithorhynchus and Crocodilus?
(a) Four-chambered heart
(b) Oviparous
(c) 12 pairs of cranial nerves
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Parrot, platypus and crocodile have a four-chambered heart, lay eggs, and have 12 pairs of cranial nerves.

Teacher's Note:
1. Platypus is an egg-laying mammal.

Question 10: Which is a matching pair of body feature and animal?
(a) Vertebral column : Salpa, Petromyzon
(b) Gnathostomata : Corvus, Myxine
(c) Air bladder : Labeo, Pristis
(d) Pneumatic bones : Corvus, Columba
Show Answer & Explanation

Answer: (d) Pneumatic bones : Corvus, Columba

Explanation:
1. Birds have hollow pneumatic bones
2. Salpa has no vertebral column, Myxine is jawless, and Pristis has no air bladder.

Teacher's Note:
1. Pneumatic bones reduce body weight.

Question 11: Pristis and Carcharodon are Chondrichthyes. Which character do they have?
(a) Air bladder present
(b) Respiration by four pairs of gills covered by operculum
(c) Males have claspers and fertilisation is internal
(d) All of these
Show Answer & Explanation

Answer: (c) Males have claspers and fertilisation is internal

Explanation:
1. Cartilaginous fishes have claspers in males, internal fertilisation, no air bladder and no operculum.

Teacher's Note:
1. Sharks must swim to avoid sinking.

Question 12: Select the correct statement:
(a) In amphibians the endoskeleton is fully ossified and long bones are hollow with air cavities
(b) The body of most mammals is divided into head, neck, trunk and tail
(c) Reptiles and birds are warm blooded
(d) All of the above
Show Answer & Explanation

Answer: (b) The body of most mammals is divided into head, neck, trunk and tail

Explanation:
1. Mammals have head, neck, trunk and tail
2. Reptiles are cold blooded and air cavities are a bird feature.

Teacher's Note:
1. Birds and mammals alone are homeotherms.

Question 13: Which group of animals is correctly matched with its characteristic feature?
(a) Rana, Clarias, Testudo, Struthio : poikilothermous
(b) Chameleon, Psittacula, Salamandra : amniotes
(c) Corvus, Columba, Camelus, Elephas : dicondylic skull
(d) Naja, Bungarus, Viper : poisonous snakes
Show Answer & Explanation

Answer: (d) Naja, Bungarus, Viper : poisonous snakes

Explanation:
1. Naja, Bungarus and Viper are poisonous snakes
2. Struthio is warm blooded, Salamandra is not an amniote, and birds have a monocondylic skull.

Teacher's Note:
1. Birds have a monocondylic skull.

Question 14: Amphibians are intermediate between Pisces and Reptilia because: A. they possess a vertebral column B. both branchial and pulmonary respiration occur in life history C. oviparity and viviparity are represented D. they have a three-chambered heart
(a) A and C
(b) B and D
(c) A and B
(d) C and D
Show Answer & Explanation

Answer: (b) B and D

Explanation:
1. Amphibians have gills in larvae and lungs in adults, and a three-chambered heart like most reptiles
2. Fish have two chambers.

Teacher's Note:
1. Tadpoles breathe by gills.

Question 15: In which chordate are the notochord, dorsal tubular nerve cord and pharyngeal gill slits all present throughout life?
(a) Doliolum
(b) Ascidia
(c) Balanoglossus
(d) Branchiostoma
Show Answer & Explanation

Answer: (d) Branchiostoma

Explanation:
1. Cephalochordates such as Branchiostoma keep all three chordate characters throughout life
2. In tunicates the notochord is found only in the larva.

Teacher's Note:
1. Amphioxus is Branchiostoma.

Question 16: Which is neither a fish nor a snake but an amphibian?
(a) Cuttle fish
(b) Hag fish
(c) Ichthyophis
(d) Horned toad
Show Answer & Explanation

Answer: (c) Ichthyophis

Explanation:
1. Ichthyophis is a limbless amphibian
2. Cuttlefish is a mollusc, hagfish is a cyclostome and horned toad is a lizard.

Teacher's Note:
1. Names can mislead.

Question 17: Which animal requires comparatively less energy for body maintenance?
(a) Camel
(b) Bird
(c) Fish
(d) Elephant
Show Answer & Explanation

Answer: (c) Fish

Explanation:
1. Fish are poikilotherms and do not spend energy to maintain body temperature.

Teacher's Note:
1. Homeotherms use energy for thermoregulation.

Question 18: Match animals with organs of locomotion. A. Star fish B. Apple snail C. Nereis D. Sea walnut; (i) muscular foot (ii) comb plates (iii) tube feet (iv) parapodia
(a) A-iii, B-i, C-ii, D-iv
(b) A-iii, B-ii, C-i, D-iv
(c) A-iv, B-iii, C-ii, D-i
(d) A-iii, B-i, C-iv, D-ii
Show Answer & Explanation

Answer: (d) A-iii, B-i, C-iv, D-ii

Explanation:
1. Starfish use tube feet, apple snail a muscular foot, Nereis parapodia and sea walnut (a ctenophore) comb plates.

Teacher's Note:
1. Sea walnut is Pleurobrachia.

Question 19: Which one is a mollusc?
(a) Sea horse
(b) Sea lily
(c) Sea mouse
(d) Sea hare
Show Answer & Explanation

Answer: (d) Sea hare

Explanation:
1. Sea hare (Aplysia) is a mollusc
2. Sea horse is a fish, sea lily an echinoderm and sea mouse a polychaete annelid.

Teacher's Note:
1. Do not trust common names.

Question 20: Metameric segmentation first developed in the phylum:
(a) Ctenophora
(b) Chordata
(c) Annelida
(d) Arthropoda
Show Answer & Explanation

Answer: (c) Annelida

Explanation:
1. Annelids are the first animals showing true metameric segmentation.

Teacher's Note:
1. Annelid body is divided into segments.

Question 21: Hydra typically has: A. radially symmetrical body B. gastrovascular cavity C. both polyp and medusoid forms
(a) A, B and C are correct
(b) B and C are correct
(c) A and B are correct
(d) A and C are correct
Show Answer & Explanation

Answer: (c) A and B are correct

Explanation:
1. Hydra is radially symmetrical with a gastrovascular cavity, but exists only as a polyp.

Teacher's Note:
1. Obelia shows both forms.

Question 22: Which insects are vectors?
(a) Culex
(b) Aedes
(c) Anopheles
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. Culex, Aedes and Anopheles are mosquitoes that carry diseases.

Teacher's Note:
1. Anopheles carries malaria.

Question 23: Consider these statements: A. Aptenodytes belongs to Aves. B. The locomotory organelle of Trypanosoma is the flagellum. C. Euspongia is the common bath sponge. D. Coelenterates are pseudocoelomates. Which are correct?
(a) C alone
(b) B and C
(c) A, B and C
(d) B, C and D
Show Answer & Explanation

Answer: (c) A, B and C

Explanation:
1. A, B and C are correct
2. Coelenterates are acoelomate.

Teacher's Note:
1. Aptenodytes is the penguin.

Question 24: Which feature is NOT applicable to Taenia, Fasciola and Planaria?
(a) Triploblastic
(b) Absence of metamerism
(c) Parasitism
(d) Absence of a definite circulatory and respiratory system
Show Answer & Explanation

Answer: (c) Parasitism

Explanation:
1. Planaria is free living, not parasitic.

Teacher's Note:
1. Planaria are free-living flatworms.

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