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Class XI · Biology

Animal Kingdom: NEET MCQ practice

555 practice questions on Animal Kingdom, including 64 from past NEET papers, each with an explanation. Practise them chapter by chapter in the GyaanLoop app.

555

Practice questions

321

Easy

226

Medium

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What Animal Kingdom covers

Topics in the NEET (UG) 2026–27 syllabus for this chapter.

Salient features and classification of animals- non-chordates up to phyla level
Chordates up to classes level
Distinguishing features and at least two examples of each category

Past NEET questions on Animal Kingdom

Try each one, then open the answer and explanation.

Question 1 · NEET 2025

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): All vertebrates are chordates but all chordates are not vertebrate. Reason (R): The members of subphylum vertebrata possess notochord, during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below:

A.Both A and R are true and R is the correct explanation of A
B.Both A and R are true but R is not the correct explanation of A
C.A is true but R is false
D.A is false but R is true

Show answer

Answer: A. Both A and R are true and R is the correct explanation of A

All vertebrates are chordates, but not all chordates are vertebrates (e.g., urochordates, cephalochordates). Reason is true: vertebrates have notochord replaced by vertebral column. Reason correctly explains why vertebrates are a subset of chordates.

Question 2 · NEET 2025

Role of the water vascular system in Echinoderms is: A. Respiration and Locomotion B. Excretion and Locomotion C. Capture and transport of food D. Digestion and Respiration E. Digestion and Excretion Choose the correct answer from the options given below:

A.A and B Only
B.A and C Only
C.B and C Only
D.B, D and E Only

Show answer

Answer: B. A and C Only

The water vascular system in echinoderms is primarily for locomotion via tube feet. It is also used for food capture and transport in many species like sea stars. Respiration, excretion, and digestion are not its main roles.

Question 3 · NEET 2025

Which of the following statement is correct about location of the male frog copulatory pad?

A.First and Second digit of fore limb
B.First digit of hind limb
C.Second digit of fore limb
D.First digit of the fore limb

Show answer

Answer: D. First digit of the fore limb

In male frogs, nuptial pads (copulatory pads) are keratinized, rough structures on the inner side of the first digit (thumb) of the forelimbs. They help in grasping the female during amplexus.

Question 4 · NEET 2025

All living members of the class Cyclostomata are:

A.Free living
B.Endoparasite
C.Symbiotic
D.Ectoparasite

Show answer

Answer: D. Ectoparasite

First principles: Cyclostomata includes jawless fish like lampreys and hagfish. Lampreys are ectoparasites attaching to other fish. Hagfish are scavengers not parasites, but they're also free-living. Both are vertebrates, not symbiotic in the usual sense. No living cyclostomes are endoparasites. Considering both, the nearest consistent feature is that many are parasites, specifically ectoparasites (lampreys).

Question 5 · NEET 2025

While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?

A.Acoelomate
B.Pseudocoelomate
C.Schizocoelomate
D.Spongocoelomate

Show answer

Answer: B. Pseudocoelomate

Mesoderm present on body wall but absent around gut suggests the body cavity is lined by mesoderm only on outer side, not inner side. That defines a pseudocoelomate condition.

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What Animal Kingdom covers

Past NEET questions on Animal Kingdom

More Class XI Biology chapters