NEET Biology Animal Kingdom MCQs Set 18

Biology Objective Questions and Answers: Animal Kingdom

Explore reliable objective questions for Animal Kingdom tailored for NEET learners. Utilizing these Biology multiple-choice formats ensures thorough preparation and strengthens problem-solving speed for upcoming school assessments.

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Multiple Choice Questions

Question 1: The excretory organ of Balanoglossus is the
(a) proboscis gland
(b) nephridia
(c) Malpighian tubules
(d) flame cells
Show Answer & Explanation

Answer: (a) proboscis gland

Explanation:
1. Balanoglossus is a hemichordate with a proboscis gland.

Teacher's Note:
1. Hemichordates were once placed in Chordata.

Question 2: Notochord is present only in the larval tail in
(a) Cephalochordata
(b) Vertebrata
(c) Hemichordata
(d) Urochordata
Show Answer & Explanation

Answer: (d) Urochordata

Explanation:
1. In tunicates notochord is limited to the larva.

Teacher's Note:
1. In Cephalochordata it persists through life from head to tail.

Question 3: The subphylum in which the notochord extends from head to tail and persists throughout life is
(a) Urochordata
(b) Cephalochordata
(c) Vertebrata
(d) Hemichordata
Show Answer & Explanation

Answer: (b) Cephalochordata

Explanation:
1. Branchiostoma (lancelet) retains a notochord throughout life.

Teacher's Note:
1. Urochordata and Cephalochordata are protochordates.

Question 4: Animals having a circular sucking mouth without jaws belong to class
(a) Chondrichthyes
(b) Osteichthyes
(c) Cyclostomata
(d) Amphibia
Show Answer & Explanation

Answer: (c) Cyclostomata

Explanation:
1. Lampreys and hagfish are jawless ectoparasites on fishes.

Teacher's Note:
1. Petromyzon is lamprey and Myxine is hagfish.

Question 5: Cartilaginous fishes must swim constantly because they
(a) lack gills
(b) have a bony skeleton
(c) lack an air bladder
(d) breathe air
Show Answer & Explanation

Answer: (c) lack an air bladder

Explanation:
1. Without an air bladder they sink if they stop swimming.

Teacher's Note:
1. Bony fishes have an air bladder for buoyancy.

Question 6: Which fish has an electric organ and which has a poisonous sting?
(a) Torpedo and Trygon
(b) Trygon and Torpedo
(c) Pristis and Scoliodon
(d) Scoliodon and Pristis
Show Answer & Explanation

Answer: (a) Torpedo and Trygon

Explanation:
1. Torpedo (electric ray) has electric organs and Trygon (sting ray) a poisonous sting.

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

Question 7: Animals that cannot regulate their body temperature, like fishes, are called
(a) homeothermous
(b) endothermic
(c) poikilothermous
(d) homoiosmotic
Show Answer & Explanation

Answer: (c) poikilothermous

Explanation:
1. Fishes, amphibians and reptiles are cold blooded or poikilothermous.

Teacher's Note:
1. Birds and mammals are homeothermous.

Question 8: Bony fishes have how many pairs of gills covered by operculum?
(a) Three
(b) Five
(c) Six
(d) Four
Show Answer & Explanation

Answer: (d) Four

Explanation:
1. Bony fishes have four pairs of gills covered by an operculum.

Teacher's Note:
1. Cartilaginous fishes have separate gill slits without operculum.

Question 9: A three chambered heart is found in
(a) fishes and birds
(b) birds and mammals
(c) fishes and mammals
(d) amphibians and most reptiles
Show Answer & Explanation

Answer: (d) amphibians and most reptiles

Explanation:
1. Amphibians and reptiles have two atria and one ventricle.

Teacher's Note:
1. Crocodiles have a four chambered heart.

Question 10: Reptiles with a four chambered heart are
(a) snakes
(b) lizards
(c) crocodiles
(d) tortoises
Show Answer & Explanation

Answer: (c) crocodiles

Explanation:
1. Crocodiles are the only reptiles with a four chambered heart.

Teacher's Note:
1. Other reptiles have a three chambered heart.

Question 11: Birds have hollow long bones with air cavities, called
(a) spongy bones
(b) cartilage bones
(c) dermal bones
(d) pneumatic bones
Show Answer & Explanation

Answer: (d) pneumatic bones

Explanation:
1. Pneumatic bones reduce body weight for flight.

Teacher's Note:
1. The digestive tract has crop and gizzard.

Question 12: Which oviparous animal has mammary glands?
(a) Macropus
(b) Pteropus
(c) Ornithorhynchus
(d) Canis
Show Answer & Explanation

Answer: (c) Ornithorhynchus

Explanation:
1. The platypus lays eggs yet suckles young.

Teacher's Note:
1. Kangaroo is a marsupial and gives birth to underdeveloped young.

Question 13: The undifferentiated layer between ectoderm and endoderm of diploblastic animals is
(a) mesoderm
(b) coelom
(c) mesoglea
(d) pseudocoelom
Show Answer & Explanation

Answer: (c) mesoglea

Explanation:
1. Cnidarians and ctenophores have a jelly like mesoglea.

Teacher's Note:
1. Triploblastic animals have mesoderm.

Question 14: Which pair is correct?
(a) Petromyzon: hag fish
(b) Myxine: lamprey
(c) Branchiostoma: lancelet
(d) Pristis: sting ray
Show Answer & Explanation

Answer: (c) Branchiostoma: lancelet

Explanation:
1. Branchiostoma is the lancelet; Petromyzon is the lamprey, Myxine the hag fish and Pristis the saw fish.

Teacher's Note:
1. Trygon is the sting ray.

Question 15: Which pair is correct?
(a) Rana: tree frog
(b) Ichthyophis: limbless amphibian
(c) Hyla: Indian bull frog
(d) Bufo: limbless amphibian
Show Answer & Explanation

Answer: (b) Ichthyophis: limbless amphibian

Explanation:
1. Ichthyophis is limbless, Hyla is a tree frog, Rana tigrina the bull frog and Bufo the common toad.

Teacher's Note:
1. All are amphibians.

Question 16: Which pair is correct?
(a) Corvus: pigeon
(b) Columba: crow
(c) Pavo: parrot
(d) Struthio: ostrich
Show Answer & Explanation

Answer: (d) Struthio: ostrich

Explanation:
1. Struthio is the ostrich, Corvus the crow, Columba the pigeon and Pavo the peacock.

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

Question 17: Which pair is correct?
(a) Macropus: platypus
(b) Ornithorhynchus: kangaroo
(c) Pteropus: flying fox
(d) Balaenoptera: monkey
Show Answer & Explanation

Answer: (c) Pteropus: flying fox

Explanation:
1. Pteropus is the flying fox and a mammal; Macropus is the kangaroo and Balaenoptera the blue whale.

Teacher's Note:
1. Macaca is the monkey.

Question 18: Which statement is correct?
(a) All chordates are vertebrates
(b) Notochord is endodermal in origin in all animals
(c) All vertebrates are chordates, but not all chordates are vertebrates
(d) Annelids are pseudocoelomates
Show Answer & Explanation

Answer: (c) All vertebrates are chordates, but not all chordates are vertebrates

Explanation:
1. Tunicates and lancelets are chordates without a vertebral column.

Teacher's Note:
1. Notochord is mesodermal in origin.

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FAQs

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