NEET Biology · Chapter-wise PYQs

Animal Kingdom NEET PYQs (2005–2026) with Solutions

Animal Kingdom has appeared in 7 of the 22 NEET and AIPMT papers from 2005 to 2026, with 27 questions in all: about 1.2 per paper on average. The last five papers (2022–2026) had 8 questions from it.

The most-asked topics are Basis of Classification (9), Chordates (6) and Comparative Features and Examples (5).

NEET MIND's syllabus map rates Animal Kingdom as medium weightage: about 2 questions (8 marks) in a NEET paper.

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Free account: 15 PYQs from Animal Kingdom with explanations and progress tracking. Premium unlocks all 27.

PYQs in this chapter
27
Papers it appeared in
7 of 22
Average per paper
1.2
NEET weightage
Medium

10 solved Animal Kingdom PYQs

Real NEET and AIPMT questions from this chapter, newest first. Try each one, then open the answer and the step-by-step explanation.

  1. Question 1 (NEET 2026)

    NEET 2026MediumBody symmetry; Echinodermata features
    Given below are two statements : Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symmetry. Statement II : In phylum Echinodermata, both adults and larvae are radially symmetrical. In the light of the above statements, choose the most appropriate answer from the options given below :
    1. Option A: Both Statement I and Statement II are correct
    2. Option B: Both Statement I and Statement II are incorrect
    3. Option C: Statement I is correct but Statement II is incorrect
    4. Option D: Statement I is incorrect but Statement II is correct
    Show answer & explanation

    Correct answer: (C) Statement I is correct but Statement II is incorrect

    Explanation

    Statement I is correct: this is exactly how NCERT defines radial symmetry (seen in coelenterates, ctenophores and echinoderms). Statement II is incorrect: in echinoderms the adults are radially symmetrical but the larvae are bilaterally symmetrical. So Statement I is correct but Statement II is incorrect, which is option (C).

  2. Question 2 (NEET 2026)

    NEET 2026EasyClass Reptilia characteristics
    Given below are two statements: Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have three chambered heart. In the light of the above statements, choose the most appropriate answer from the options given below:
    1. Option A: Both Statement I and Statement II are correct
    2. Option B: Both Statement I and Statement II are incorrect
    3. Option C: Statement I is correct but Statement II is incorrect
    4. Option D: Statement I is incorrect but Statement II is correct
    Show answer & explanation

    Correct answer: (C) Statement I is correct but Statement II is incorrect

    Explanation

    Statement I is correct: NCERT states that the class name Reptilia refers to their creeping or crawling mode of locomotion (Latin repere or reptum, to creep or crawl). Statement II is incorrect: the reptilian heart is usually three-chambered, but it is four-chambered in crocodiles, so not all reptiles have a three-chambered heart. So Statement I is correct but Statement II is incorrect, which is option (C).

  3. Question 3 (NEET 2026)

    NEET 2026EasyFundamental characters of chordates
    Which of the following is not a characteristic of chordates?
    1. Option A: Presence of notochord
    2. Option B: Central nervous system is dorsal
    3. Option C: Absence of gills
    4. Option D: Presence of post anal part (tail)
    Show answer & explanation

    Correct answer: (C) Absence of gills

    Explanation

    According to NCERT, chordates are fundamentally characterised by the presence of a notochord, a dorsal hollow nerve cord, and paired pharyngeal gill slits; they also have a post-anal part (tail) and a ventral heart. Since pharyngeal gill slits are a basic chordate feature, "absence of gills" is not a characteristic of chordates. Hence the answer is option (C).

  4. Question 4 (NEET 2026)

    NEET 2026MediumChordates
    A group of researchers procured some fish-like animals and upon investigation the following characters were observed: A. Endoskeleton was made of cartilage. B. Ectoparasitic; attached to fish skin with circular sucking mouth. C. Paired fins and scales were absent, but 7 pairs of gill slits were present. Which of the following species of animals did they consider to fit best with these characters?
    1. Option A: Scoliodon sp.
    2. Option B: Petromyzon sp.
    3. Option C: Exocoetus sp.
    4. Option D: Branchiostoma sp.
    Show answer & explanation

    Correct answer: (B) Petromyzon sp.

    Explanation

    Petromyzon (lamprey) belongs to Cyclostomata and has a cartilaginous endoskeleton, circular sucking mouth, ectoparasitic habit, absence of paired fins and scales, and multiple gill slits.

  5. Question 5 (NEET 2026)

    NEET 2026MediumChordates
    Select the set of fishes which belong to the class Osteichthyes.
    1. Option A: Devil fish, Cuttlefish and Hagfish
    2. Option B: Saw fish, Fighting fish and Dog fish
    3. Option C: Starfish, Hagfish and Cuttlefish
    4. Option D: Flying fish, Angel fish and Fighting fish
    Show answer & explanation

    Correct answer: (D) Flying fish, Angel fish and Fighting fish

    Explanation

    Flying fish (Exocoetus), Angel fish (Pterophyllum) and Fighting fish (Betta) belong to Osteichthyes (bony fishes).

  6. Question 6 (NEET 2026)

    NEET 2026MediumBasis of Classification
    Select the incorrect statements from the following: A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C. Pseudocoelom is possessed by Aschelminthes. D. Notochord is persistent throughout life in class Chondrichthyes. E. Members of class Reptilia maintain a constant body temperature. Choose the answer from the options given below:
    1. Option A: A and C only
    2. Option B: B and E only
    3. Option C: C and D only
    4. Option D: B and D only
    Show answer & explanation

    Correct answer: (B) B and E only

    Explanation

    Adult echinoderms exhibit radial symmetry, not bilateral symmetry. Reptiles are ectothermic and do not maintain constant body temperature. Statements B and E are incorrect.

  7. Question 7 (NEET 2026)

    NEET 2026MediumComparative Features and Examples
    Match List I with List II: Choose the correct answer from the options given below
    1. Option A: A-II, B-I, C-IV, D-III
    2. Option B: A-I, B-II, C-IV, D-III
    3. Option C: A-II, B-I, C-III, D-IV
    4. Option D: A-III, B-II, C-I, D-IV
    Show answer & explanation

    Correct answer: (A) A-II, B-I, C-IV, D-III

    Explanation

    Molluscs mainly show branchial respiration, reptiles use pulmonary respiration, adult amphibians use pulmonary and cutaneous respiration and Amoeba performs cellular respiration.

  8. Question 8 (NEET 2026)

    NEET 2026EasyChordates
    The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as:
    1. Option A: Struthio
    2. Option B: Neophron
    3. Option C: Aptenodytes
    4. Option D: Psittacula
    Show answer & explanation

    Correct answer: (C) Aptenodytes

    Explanation

    Aptenodytes (penguin) is a flightless bird whose forelimbs are modified into flippers for swimming.

  9. Question 9 (NEET 2018)

    NEET 2018EasyChordates
    Which one of these animals is not a homeotherm?
    1. Option A: Macropus
    2. Option B: Chelone
    3. Option C: Psittacula
    4. Option D: Camelus
    Show answer & explanation

    Correct answer: (B) Chelone

    Explanation

    Homeotherms maintain a constant body temperature irrespective of the surroundings. Birds and mammals are homeothermic. Chelone (turtle) belongs to class Reptilia and is poikilothermic (cold-blooded). Hence, option (B) is correct.

  10. Question 10 (NEET 2013)

    NEET 2013EasyNon-Chordates
    One of the representatives of phylum Arthropoda is
    1. Option A: Cuttlefish
    2. Option B: Silverfish
    3. Option C: Pufferfish
    4. Option D: Flying fish
    Show answer & explanation

    Correct answer: (B) Silverfish

    Explanation

    Silverfish is an arthropod belonging to class Insecta.

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