Download NEET MCQs for NEET Biology: Animal Kingdom
Access targeted multiple-choice questions for Animal Kingdom designed to align with the latest NEET academic syllabus for NEET Biology. These objective practice sets help students evaluate their conceptual understanding and improve exam readiness.
Chapter-wise Objective Questions: Animal Kingdom
View or download the dedicated Animal Kingdom MCQ resource below. Practicing these 50 objective questions regularly builds familiarity with standard exam patterns and helps secure higher marks in final Biology evaluations.
Multiple Choice Questions
(a) Only a
(b) Only b
(c) Only c
(d) All a,b and c
Show Answer & Explanation
Answer: (d) All a,b and c
Explanation:
1. Cnidarians and ctenophores are radially symmetrical, and adult echinoderms are also radially symmetrical.
2. So all three groups show radial symmetry.
Teacher's Note:
1. Echinoderm larvae are bilateral.
(a) Levels of organisation
(b) Symmetry
(c) Diploblastic organisation
(d) All of the above
Show Answer & Explanation
Answer: (d) All of the above
Explanation:
1. Cnidarians and ctenophores are both diploblastic, radially symmetrical and at tissue level of organisation.
2. All the given similarities are true.
Teacher's Note:
1. They differ in cnidoblasts and comb plates.
(a) Sea anemone, Corals
(b) Sea fan, sea walnut
(c) Sea pen, scypha
(d) Nereis, Ascaris
Show Answer & Explanation
Answer: (a) Sea anemone, Corals
Explanation:
1. Sea anemone and corals are both cnidarians.
2. Sea walnut is a ctenophore, scypha is a sponge and Ascaris is a roundworm.
Teacher's Note:
1. So only option (a) pairs animals of one phylum.
(a) Three
(b) Four
(c) Five
(d) Six
Show Answer & Explanation
Answer: (c) Five
Explanation:
1. Physalia, Obelia, Pennatula, Gorgonia and Meandrina are coelenterates.
2. Planaria is a flatworm, Pleurobrachia a ctenophore and Nereis an annelid.
Teacher's Note:
1. That makes five.
(a) Four
(b) Three
(c) Two
(d) One
Show Answer & Explanation
Answer: (a) Four
Explanation:
1. All four statements are correct for Ctenophora.
2. They are diploblastic with tissue level of organisation, have eight comb rows, digestion is both extracellular and intracellular, and only sexual reproduction occurs.
Teacher's Note:
1. Ctenophores show external fertilisation and indirect development.
(a) Sessile
(b) Cylindrical
(c) Present in Hydra
(d) Free-swimming
Show Answer & Explanation
Answer: (d) Free-swimming
Explanation:
1. The medusa is the free-swimming, umbrella-shaped form of cnidarians.
2. The polyp is sessile and cylindrical.
Teacher's Note:
1. Hydra has only a polyp form.
(a) Asterias
(b) Spongilla
(c) Earthworm
(d) Hydra
Show Answer & Explanation
Answer: (d) Hydra
Explanation:
1. Hydra is a radially symmetrical diploblastic animal with a blind sac body plan (one opening).
2. Asterias is an echinoderm and earthworm is an annelid.
Teacher's Note:
1. Spongilla is a sponge.
(a) Star fish
(b) Sea fan
(c) Silver fish
(d) Cuttle fish
Show Answer & Explanation
Answer: (b) Sea fan
Explanation:
1. Sea fan (Gorgonia) is a coelenterate.
2. Starfish is an echinoderm, silver fish an insect and cuttlefish a mollusc.
Teacher's Note:
1. Names with fish do not mean fishes.
(a) Housefly
(b) Obelia
(c) Drosophila
(d) All of these
Show Answer & Explanation
Answer: (b) Obelia
Explanation:
1. Obelia shows alternation of generations (metagenesis) between polyp and medusa.
2. Housefly and Drosophila are insects with no such alternation.
Teacher's Note:
1. So Obelia is correct.
(a) Metagenesis
(b) Morphogenesis
(c) Apolysis
(d) Pedogeny
Show Answer & Explanation
Answer: (a) Metagenesis
Explanation:
1. Obelia shows metagenesis, the alternation of the polyp and medusa generations.
2. Morphogenesis is development of form.
Teacher's Note:
1. Pedogeny is reproduction in a larval stage.
(a) Sea pen
(b) Sea anemone
(c) sea cucumber
(d) sea fan
Show Answer & Explanation
Answer: (c) sea cucumber
Explanation:
1. Sea cucumber (Holothuria) is an echinoderm.
2. Sea pen, sea anemone and sea fan are cnidarians.
Teacher's Note:
1. Check each name against its phylum.
(a) Porifera
(b) Coelenterata
(c) Nematodes
(d) Annelida PLATYHELMINTHES, ASCHELMINTHES, ANNELIDA
Show Answer & Explanation
Answer: (b) Coelenterata
Explanation:
1. Nematocysts (stinging cells) are found in the cnidoblasts of coelenterates.
2. Nematodes only sound similar.
Teacher's Note:
1. They are used for defence and capture of prey.
(a) Ctenophore
(b) Platyhelminthes
(c) Aschelminthes
(d) Both 2 and 3
Show Answer & Explanation
Answer: (c) Aschelminthes
Explanation:
1. Aschelminthes have a pseudocoelom.
2. Platyhelminthes are acoelomate and ctenophores have no coelom.
Teacher's Note:
1. Hence only Aschelminthes is correct.
(a) Coelentrates
(b) Ctenophore
(c) Platyhelminthes
(d) Aschelminthes
Show Answer & Explanation
Answer: (c) Platyhelminthes
Explanation:
1. Platyhelminthes are bilaterally symmetrical, triploblastic and acoelomate.
2. Coelenterates and ctenophores are diploblastic.
Teacher's Note:
1. Aschelminthes are pseudocoelomate.
(a) Nereis
(b) Ctenoplana
(c) Wuchereria
(d) Taenia
Show Answer & Explanation
Answer: (a) Nereis
Explanation:
1. Nereis is an annelid, which is protostomic, bilateral and has a schizocoelous coelom.
2. Ctenoplana is a ctenophore, and Wuchereria and Taenia are acoelomate or pseudocoelomate.
Teacher's Note:
1. Annelids are the answer.
(a) Incomplete type
(b) Tube within a tube
(c) Blind sac
(d) Pseudocoel type
Show Answer & Explanation
Answer: (b) Tube within a tube
Explanation:
1. Nematodes have a complete alimentary canal, a tube within a tube, with mouth and anus.
2. Flatworms have an incomplete canal.
Teacher's Note:
1. The pseudocoelom lies around the gut.
(a) Ctenoplana, Taenia, Planaria
(b) Euspongia, Physalia, Sea anemone
(c) Wuchereria, Ascaris, Taenia
(d) Frog, Ctenoplana, Hydra
Show Answer & Explanation
Answer: (c) Wuchereria, Ascaris, Taenia
Explanation:
1. Wuchereria, Ascaris and Taenia are all triploblastic.
2. The other options include diploblastic members such as Ctenoplana, Physalia, sea anemone, Hydra and Euspongia.
Teacher's Note:
1. So set (c) fits.
(a) Physalia, Liver Fluke, Leech
(b) Gorgonia, Aedes, Chiton
(c) Hydra, Aedes, Sea-anemone
(d) Pheretima, Nereis, Hirudinaria
Show Answer & Explanation
Answer: (d) Pheretima, Nereis, Hirudinaria
Explanation:
1. Metameric segmentation is found in annelids and arthropods.
2. Pheretima, Nereis and Hirudinaria are annelids.
Teacher's Note:
1. Others in the options are unsegmented.
(a) Three
(b) Four
(c) Five
(d) Six
Show Answer & Explanation
Answer: (a) Three
Explanation:
1. Ascaris, Wuchereria and Ancylostoma are the pseudocoelomates in the list, so there are three.
2. Taenia and Fasciola are acoelomate, Sycon and Ctenoplana have no coelom, and Ascidia, Branchiostoma and Aplysia are coelomate.
Teacher's Note:
1. The count is three.
(a) Ctenophore
(b) Annelida
(c) Aschelminthes
(d) Platyhelminthes
Show Answer & Explanation
Answer: (d) Platyhelminthes
Explanation:
1. Flame cells (protonephridia) help in osmoregulation and excretion in Platyhelminthes.
2. Annelids have nephridia.
Teacher's Note:
1. Aschelminthes have an excretory tube.
(a) Nereis
(b) Octopus
(c) Prawn
(d) Antedon
Show Answer & Explanation
Answer: (a) Nereis
Explanation:
1. Nereis (a polychaete annelid) has lateral parapodia that help in swimming.
2. Octopus and prawn have no parapodia.
Teacher's Note:
1. Antedon is a feather star.
(a) Acoelom
(b) Pseudocoelom
(c) Metamerism
(d) Organ system level of organisation
Show Answer & Explanation
Answer: (d) Organ system level of organisation
Explanation:
1. Ascaris, Nereis, Wuchereria and Hirudinaria all show organ system level of organisation.
2. Ascaris and Wuchereria are pseudocoelomate and Nereis and Hirudinaria are coelomate, so the other options are not common.
Teacher's Note:
1. Organ system level is shared.
(a) Tape worm
(b) Liver fluke
(c) Hook worm
(d) Planaria
Show Answer & Explanation
Answer: (c) Hook worm
Explanation:
1. Hook worm (Ancylostoma) is a roundworm, an aschelminth.
2. Tapeworm, liver fluke and Planaria are flatworms.
Teacher's Note:
1. Learn common names with their phyla.
(a) Liverfluke, Planaria
(b) Planaria, Ascaris
(c) Ascaris, Anclyostoma
(d) Sandworm, Planaria
Show Answer & Explanation
Answer: (a) Liverfluke, Planaria
Explanation:
1. Liver fluke and Planaria are both flatworms.
2. Ascaris and hookworm are roundworms and sandworm (Nereis) is an annelid.
Teacher's Note:
1. Option (a) is the right set.
(a) Earthworm
(b) Leech
(c) Ascaris
(d) Both 2 and 3
Show Answer & Explanation
Answer: (c) Ascaris
Explanation:
1. In Ascaris the sexes are separate and the female is longer than the male.
2. Earthworm and leech are monoecious.
Teacher's Note:
1. Sexual dimorphism is a feature of the roundworms.
(a) Leech
(b) Earthworm
(c) Scorpion
(d) Cobra
Show Answer & Explanation
Answer: (a) Leech
Explanation:
1. Hirudin is an anticoagulant present in the saliva of the leech.
2. It prevents blood clotting during feeding.
Teacher's Note:
1. Earthworm does not secrete it.
(a) Schistosoma
(b) Dugesia
(c) Wuchereria
(d) Hirudinaria
Show Answer & Explanation
Answer: (a) Schistosoma
Explanation:
1. Schistosoma (blood fluke) is a dioecious flatworm.
2. Dugesia is monoecious and Wuchereria is not a flatworm.
Teacher's Note:
1. Hirudinaria is an annelid.
(a) Hookworm
(b) Liver fluke
(c) Jelly fish
(d) Leech
Show Answer & Explanation
Answer: (a) Hookworm
Explanation:
1. Hookworm is an aschelminth with a pseudocoelom.
2. Liver fluke is acoelomate, jelly fish has no coelom and leech is a true coelomate.
Teacher's Note:
1. Aschelminthes are pseudocoelomates.
Download Chapter MCQs: NEET Biology Animal Kingdom
About Animal Kingdom MCQs for NEET Biology
Test your conceptual understanding of Animal Kingdom with these targeted multiple-choice questions. Designed in alignment with the latest NEET curriculum for NEET Biology, these problem sets build accuracy and prepare students for objective exams.
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FAQs
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By solving our NEET Biology Animal Kingdom MCQs Set 27, NEET students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Biology.
Yes, Biology MCQs for NEET have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused NEET exams.
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