Which animals often move actively and have a central nervous system?

B. Bilaterally symmetrical animals

A. Radially symmetrical animals

B. Bilaterally symmetrical animals

What change occurs in amphibians as they grow up?

A. Lose gills and develop lungs

B. Lose lungs and develop gills

D. Lose limbs and develop a tail

Everyday Science · Zoology & Animal Kingdom · page 7 of 46

Classes of Animals MCQs with Answers

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Classes of Animals MCQs (61–70)

10 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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61.
The worm with unsegmented body includes ?
Correct Answer: B. Flatworm
One-liner
The worm with an unsegmented body is the Flatworm (Platyhelminthes).
62.
The three chambered heart with incomplete septum is a characteristic of ?
Correct Answer: A. Most of reptiles
One-liner
A three-chambered heart with an incomplete septum is a characteristic of most of reptiles.
63.
Most are ectothermic, absorbing external heat as the main source of body heat.
Correct Answer: C. Reptiles
One-liner
Most reptiles are ectothermic, relying on external heat sources to regulate their body temperature.
64.
Which of the following structure is present in birds?
Correct Answer: A. Gizzard
One-liner
Birds possess a gizzard, a muscular part of the stomach that grinds food, often with the help of swallowed stones.
65.
Which animals often move actively and have a central nervous system?
Correct Answer: B. Bilaterally symmetrical animals
One-liner
Animals with bilateral symmetry typically exhibit active movement and possess a centralized nervous system.
66.
Head of arthropods contains _?
Correct Answer: D. All of these
One-liner
The head of arthropods contains all of these — antennae, eyes, and mouthparts.
67.
What change occurs in amphibians as they grow up?
Correct Answer: A. Lose gills and develop lungs
One-liner
Amphibians undergo metamorphosis in which they lose gills and develop lungs as they transition from aquatic larvae to terrestrial adults.
68.
Past Paper MCQ
Coral is made of ?
Correct Answer: D. Polyps
One-liner
Coral is made of polyps, which are tiny, soft-bodied marine organisms that secrete calcium carbonate to form hard skeletons.
69.
The animals which live in water and on dry surface are called _?
Correct Answer: A. Amphibian
One-liner
Animals that live both in water and on dry land are called Amphibians.
70.
The characteristic larvae of lampreys are called _?
Correct Answer: D. Ammocoetes
One-liner
The characteristic larvae of lampreys are called Ammocoetes.

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Classes of Animals MCQs with Answers

Classes of Animals MCQs (61–70)

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