NEET Biology Animal Kingdom MCQs Set 22

Practice MCQs for NEET Biology Animal Kingdom

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Multiple Choice Questions

Question 1: Which of the following are referred to as non-vertebrate chordate?
(a) Ciona, Ascidia, Amphioxus
(b) Lamprey, Myxine, Shark
(c) Scoliodon, Torpedo, Trygon
(d) Pristis, Branchiostoma, Scyllium
Show Answer & Explanation

Answer: (a) Ciona, Ascidia, Amphioxus

Explanation:
1. Urochordates (Ciona, Ascidia) and cephalochordates (Amphioxus/Branchiostoma) are non-vertebrate chordates; the others are fishes.

Teacher's Note:
1. Protochordata lack a vertebral column.

Question 2: Members of which group are not deuterostomes?
(a) Chordates
(b) Echinoderms
(c) Arthropods
(d) None of these; all are deuterostomes
Show Answer & Explanation

Answer: (c) Arthropods

Explanation:
1. Chordates, echinoderms and hemichordates are deuterostomes; arthropods are protostomes.

Teacher's Note:
1. Deuterostome: anus forms first.

Question 3: Which of the following is the correct match of an animal, its characteristics and taxon?
(a) Chameleon: prehensile tail, dicondylic skull, camouflage; Reptilia
(b) Monotremes: viviparous, hair, external ears (pinnae); Mammalia
(c) Rana tigrina: no exoskeleton, dicondylic skull, eyes with eyelids; Amphibia
(d) Scoliodon: placoid scales, viviparous, external fertilisation; Chondrichthyes
Show Answer & Explanation

Answer: (c) Rana tigrina: no exoskeleton, dicondylic skull, eyes with eyelids; Amphibia

Explanation:
1. Rana tigrina has no exoskeleton, a dicondylic skull and eyelids. A chameleon has a monocondylic skull, monotremes lack pinnae and Scoliodon has internal fertilisation.

Teacher's Note:
1. Check each animal's features.

Question 4: All the following statements are correct about Petromyzon (Lamprey) except
(a) Lampreys are marine and migrate for spawning into rivers (Anadromous)
(b) Their characteristic ammocoete larvae after metamorphosis migrates back to the ocean
(c) After spawning the adult lamprey stops feeding and migrates back to ocean where it lives
(d) It is a sanguivorous ectoparasite on other fishes
Show Answer & Explanation

Answer: (c) After spawning the adult lamprey stops feeding and migrates back to ocean where it lives

Explanation:
1. Adult lampreys migrate to fresh water to spawn and die soon after spawning; they do not return to the ocean, so (c) is incorrect.

Teacher's Note:
1. Ammocoete larva then metamorphosis.

Question 5: Poikilothermous animals having single occipital condyle will belong to
(a) Amphibia
(b) Reptiles
(c) Aves
(d) Mammals
Show Answer & Explanation

Answer: (b) Reptiles

Explanation:
1. Poikilothermous animals with a single occipital condyle are reptiles (amphibians have two; birds and mammals are homoiothermic).

Teacher's Note:
1. Monocondylic: reptiles and birds.

Question 6: Teeth are modified ________ scales which are backwardly directly
(a) Ctenoid
(b) Cycloid
(c) Placoid
(d) Ganoid
Show Answer & Explanation

Answer: (c) Placoid

Explanation:
1. Teeth are modified placoid scales, pointed backwards.

Teacher's Note:
1. Teeth of sharks are placoid scales.

Question 7: Lateral line sense organs are absent in
(a) Tadpole larva of frog
(b) Fishes
(c) Reptiles
(d) Cartilaginous fishes
Show Answer & Explanation

Answer: (c) Reptiles

Explanation:
1. Lateral line sense organs occur in fishes and aquatic amphibian larvae, not in reptiles.

Teacher's Note:
1. Detect water currents.

Question 8: Amongst the following mammals which of the following is a monotreme?
(a) Macropus (Kangaroo)
(b) Ornithorhynchus (Platypus)
(c) Balaenoptera (Blue whale)
(d) Elephas (Elephant)
Show Answer & Explanation

Answer: (b) Ornithorhynchus (Platypus)

Explanation:
1. Ornithorhynchus (platypus) is an egg-laying monotreme.

Teacher's Note:
1. Kangaroo is a marsupial.

Question 9: Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system
(a) Amphibia
(b) Reptilia
(c) Osteichthyes
(d) Aves
Show Answer & Explanation

Answer: (d) Aves

Explanation:
1. Birds (Aves) have a crop and gizzard in the digestive system.

Teacher's Note:
1. Gizzard grinds food.

Question 10: Which one of these animals is not a homeotherm?
(a) Macropus
(b) Chelone
(c) Psittacula
(d) Camelus
Show Answer & Explanation

Answer: (b) Chelone

Explanation:
1. Chelone (turtle) is a reptile, poikilothermic; Macropus, Psittacula and Camelus are homeotherms.

Teacher's Note:
1. Reptiles are cold-blooded.

Question 11: Which among these is the correct combination of aquatic mammals?
(a) Seals, Dolphins, Sharks
(b) Dolphins, Seals, Trygon
(c) Whales, Dolphins, Seals
(d) Trygon, Whales, Seals
Show Answer & Explanation

Answer: (c) Whales, Dolphins, Seals

Explanation:
1. Whales, dolphins and seals are aquatic mammals; sharks and Trygon are fishes.

Teacher's Note:
1. Mammals breathe air.

Question 12: Which of the following represents order of 'Horse'?
(a) Equidae
(b) Perissodactyla
(c) Caballus
(d) Ferus
Show Answer & Explanation

Answer: (b) Perissodactyla

Explanation:
1. The horse belongs to the order Perissodactyla (Equidae is the family).

Teacher's Note:
1. Equus caballus.

Question 13: Choose the correct statement.
(a) All mammals are viviparous
(b) All cyclostomes do not possess jaws and paired fins.
(c) All reptiles have a three-chambered heart.
(d) All pisces have gills covered by an operculum.
Show Answer & Explanation

Answer: (b) All cyclostomes do not possess jaws and paired fins.

Explanation:
1. Cyclostomes belong to Agnatha and lack jaws and paired fins; not all mammals are viviparous, not all reptiles have a three-chambered heart, and not all fishes have an operculum.

Teacher's Note:
1. Exceptions matter.

Question 14: Which of the following characteristic features always holds true for the corresponding group of animals?
(a) 3-chambered heart with one incompletely divided ventricle Reptilia
(b) Cartilaginous endoskeleton Chondrichthyes
(c) Viviparous Mammalia
(d) Possess a mouth with an upper and a lower jaw Chordata
Show Answer & Explanation

Answer: (b) Cartilaginous endoskeleton Chondrichthyes

Explanation:
1. Chondrichthyes always have a cartilaginous endoskeleton. The other statements have exceptions (crocodile heart, monotremes, Agnatha).

Teacher's Note:
1. Learn the exceptions.

Question 15: Which one of the following characteristics is not shared by birds and mammals?
(a) Warm blooded nature
(b) Ossified endoskeleton
(c) Breathing using lungs
(d) Viviparity
Show Answer & Explanation

Answer: (d) Viviparity

Explanation:
1. Birds are oviparous, while most mammals are viviparous, so viviparity is not shared.

Teacher's Note:
1. Both are warm blooded.

Question 16: A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is:
(a) Petromyzon
(b) Eptatretus
(c) Myxine
(d) Neomyxine
Show Answer & Explanation

Answer: (a) Petromyzon

Explanation:
1. Petromyzon (lamprey) migrates to fresh water to spawn; the ammocoete larva returns to the ocean after metamorphosis.

Teacher's Note:
1. Hagfish are exclusively marine.

Question 17: Which of the following represents the correct combination without any exception? Characteristics
(a) Body covered with feathers; skin moist and Aves glandular; fore-limbs form wings; lungs with air sacs
(b) Mammary gland; hair on body; pinnae, two pairs of Mammalia limbs
(c) Mouth ventral; gills without operculum; skin with Chondrichthyes placoid scales; persistent notochord
(d) Sucking and circular mouth; jaws absent, Cyclostomata integument without scales; paired appendages
Show Answer & Explanation

Answer: (c) Mouth ventral; gills without operculum; skin with Chondrichthyes placoid scales; persistent notochord

Explanation:
1. Chondrichthyes have a ventral mouth, gills without operculum, placoid scales and a persistent notochord; other sets have exceptions (e.g. bat wings).

Teacher's Note:
1. Cartilaginous fishes.

Question 18: Which of the following animals is not viviparous?
(a) Whale
(b) Flying fox (Bat)
(c) Elephant
(d) Platypus
Show Answer & Explanation

Answer: (d) Platypus

Explanation:
1. Platypus is an egg-laying (oviparous) mammal, unlike whales, bats and elephants.

Teacher's Note:
1. Monotremes lay eggs.

Question 19: A marine cartilaginous fish that can produce electric current is
(a) Pristis
(b) Torpedo
(c) Trygon
(d) Scolidon
Show Answer & Explanation

Answer: (b) Torpedo

Explanation:
1. Torpedo (electric ray) is a marine cartilaginous fish with electric organs.

Teacher's Note:
1. Pristis is the saw fish.

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