NEET Biology Animal Kingdom MCQs Set 12

Multiple Choice Questions (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.

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Multiple Choice Questions

Question 1: Pick the odd pair out:
(a) Cellular level : Porifera
(b) Tissue level : Aschelminthes
(c) Organ level : Platyhelminthes
(d) Organ system level : Annelida
Show Answer & Explanation

Answer: (b) Tissue level : Aschelminthes

Explanation:
1. Aschelminthes show organ system level of organisation, not tissue level.

Teacher's Note:
1. Tissue level is seen in Coelenterata and Ctenophora.

Question 2: Select the correctly matched pair of animal group and symmetry:
(a) Echinoderms : radial symmetry
(b) Arthropods : bilateral symmetry
(c) Sponges : mostly asymmetrical
(d) All of these
Show Answer & Explanation

Answer: (d) All of these

Explanation:
1. Adult echinoderms are radial, arthropods are bilateral, and sponges are mostly asymmetrical.

Teacher's Note:
1. Symmetry can be asymmetrical, radial or bilateral.

Question 3: Select the group that contains only diploblastic animals:
(a) Ctenoplana, Taenia, Fasciola
(b) Physalia, Meandrina
(c) Wuchereria, Culex, Limulus
(d) Aedes, Ascaris, Hydra
Show Answer & Explanation

Answer: (b) Physalia, Meandrina

Explanation:
1. Physalia and Meandrina are cnidarians, which are diploblastic
2. Taenia, Fasciola and the others are triploblastic.

Teacher's Note:
1. Cnidarians and ctenophores are diploblastic.

Question 4: Select the option with all pseudocoelomate animals:
(a) Ascaris, Fasciola, Taenia
(b) Culex, Locusta, Limulus
(c) Wuchereria, Ascaris, Ancylostoma
(d) Nereis, Hirudinaria, Wuchereria
Show Answer & Explanation

Answer: (c) Wuchereria, Ascaris, Ancylostoma

Explanation:
1. Wuchereria, Ascaris and Ancylostoma are aschelminthes, which are pseudocoelomate
2. Fasciola and Taenia are acoelomate, and the others are coelomate.

Teacher's Note:
1. Aschelminthes are the pseudocoelomates.

Question 5: A closed blood vascular system is found in:
(a) Bombyx
(b) Sepia
(c) Balanoglossus
(d) Ascidia
Show Answer & Explanation

Answer: (b) Sepia

Explanation:
1. Sepia is a cephalopod mollusc, and cephalopods have a closed circulatory system
2. Insects and tunicates are open.

Teacher's Note:
1. Annelids, cephalopods and vertebrates have closed circulation.

Question 6: Sponges have many characters. Which one is regarded as their peculiar character?
(a) They are diploblastic
(b) Most are marine and some freshwater
(c) Choanocytes lining the spongocoel
(d) Intracellular digestion
Show Answer & Explanation

Answer: (c) Choanocytes lining the spongocoel

Explanation:
1. Choanocytes (collar cells) are found only in sponges.

Teacher's Note:
1. Choanocytes create the water current.

Question 7: Organ level of organisation is found in:
(a) Spongilla
(b) Pleurobranchia
(c) Taenia
(d) Obelia
Show Answer & Explanation

Answer: (c) Taenia

Explanation:
1. Platyhelminthes such as Taenia show organ level organisation
2. Sponges are cellular, and cnidarians and ctenophores are tissue level.

Teacher's Note:
1. Organ level begins with flatworms.

Question 8: Spongilla and Euspongia are sponges. Which character do they have?
(a) A water transport or canal system
(b) Hermaphrodite with internal fertilisation
(c) Both 1 and 2
(d) Exclusively marine
Show Answer & Explanation

Answer: (c) Both 1 and 2

Explanation:
1. Sponges have a canal system and are bisexual with internal fertilisation
2. Spongilla is a freshwater sponge, so they are not exclusively marine.

Teacher's Note:
1. Sponges show indirect development with a larva.

Question 9: Select the set of organisms that show metameric segmentation:
(a) Physalia, Fasciola, Hirudinaria
(b) Gorgonia, Aedes, Chaetopleura
(c) Asterias, Balanoglossus, Branchiostoma
(d) Pheretima, Periplaneta, Frog
Show Answer & Explanation

Answer: (d) Pheretima, Periplaneta, Frog

Explanation:
1. Annelids, arthropods and chordates are metameric
2. Pheretima, Periplaneta and frog belong to these groups.

Teacher's Note:
1. Cnidarians, flatworms and echinoderms are not segmented.

Question 10: Locomotory structures are absent in:
(a) Flagellated protozoans
(b) Sporozoans
(c) Ciliated protozoans
(d) Amoeboid protozoans
Show Answer & Explanation

Answer: (b) Sporozoans

Explanation:
1. Sporozoans such as Plasmodium have no locomotory organelles.

Teacher's Note:
1. Sporozoa have an infectious spore-like stage.

Question 11: Amoeboid protozoans are characterised by:
(a) Cilia
(b) Flagella
(c) Pseudopodia
(d) None of these
Show Answer & Explanation

Answer: (c) Pseudopodia

Explanation:
1. They move and capture prey with pseudopodia.

Teacher's Note:
1. Amoeba and Entamoeba are examples.

Question 12: Which pair is NOT correctly matched?
(a) Entamoeba : dysentery
(b) Plasmodium : malaria
(c) Trypanosoma : kala azar
(d) Giardia : diarrhoea
Show Answer & Explanation

Answer: (c) Trypanosoma : kala azar

Explanation:
1. Trypanosoma causes sleeping sickness
2. Kala azar is caused by Leishmania.

Teacher's Note:
1. Both are flagellated protozoans.

Question 13: Choose the correct statement:
(a) Poriferans are generally marine
(b) Most poriferans are asymmetrical
(c) Choanocytes line the spongocoel and canals
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. All three statements describe sponges correctly.

Teacher's Note:
1. Sponges are mostly asymmetrical.

Question 14: Which sponge is known as the bath sponge?
(a) Spongilla
(b) Scypha
(c) Euspongia
(d) Leucosolenia
Show Answer & Explanation

Answer: (c) Euspongia

Explanation:
1. Euspongia is the common bath sponge.

Teacher's Note:
1. Spongilla is the freshwater sponge.

Question 15: Which is NOT a locomotory organelle of protozoans?
(a) Cilia
(b) Flagella
(c) Tube feet
(d) Pseudopodia
Show Answer & Explanation

Answer: (c) Tube feet

Explanation:
1. Tube feet belong to echinoderms.

Teacher's Note:
1. Protozoa use cilia, flagella or pseudopodia.

Question 16: Trypanosoma belongs to:
(a) Amoeboid protozoans
(b) Sporozoans
(c) Flagellated protozoans
(d) Ciliated protozoans
Show Answer & Explanation

Answer: (c) Flagellated protozoans

Explanation:
1. Trypanosoma has flagella and causes sleeping sickness.

Teacher's Note:
1. Trypanosoma, Giardia and Leishmania are flagellates.

Question 17: Phyla showing radial symmetry are:
(a) Echinodermata, Coelenterata and Ctenophora
(b) Porifera, Mollusca and Echinodermata
(c) Protozoa and Coelenterata
(d) Coelenterata, Ctenophora and Annelida
Show Answer & Explanation

Answer: (a) Echinodermata, Coelenterata and Ctenophora

Explanation:
1. These three phyla are radially symmetrical
2. Annelida is bilateral and Porifera is asymmetrical.

Teacher's Note:
1. Ctenophores are biradial.

Question 18: An animal that can be divided into identical left and right halves in only one plane has which symmetry?
(a) Spherical
(b) Bilateral
(c) Radial
(d) Biradial
Show Answer & Explanation

Answer: (b) Bilateral

Explanation:
1. Division into two equal halves along only one plane is bilateral symmetry.

Teacher's Note:
1. Radial symmetry has many planes.

Question 19: The gullet of Paramecium is meant for:
(a) Osmoregulation
(b) Ingestion
(c) Egestion
(d) Reproduction
Show Answer & Explanation

Answer: (b) Ingestion

Explanation:
1. The gullet is a cavity through which food is taken in.

Teacher's Note:
1. Contractile vacuoles do osmoregulation.

Question 20: Which one is a monogenetic parasite?
(a) Trypanosoma
(b) Plasmodium
(c) Entamoeba
(d) Liver fluke
Show Answer & Explanation

Answer: (c) Entamoeba

Explanation:
1. Entamoeba completes its life cycle in a single host
2. Plasmodium, Trypanosoma and the fluke need two hosts.

Teacher's Note:
1. Monogenetic means one host.

Question 21: Echinoderms are considered the first deuterostomes. Which characters do they share?
(a) Radially symmetrical adults but bilateral larvae
(b) Excretory system absent
(c) Indirect development with a free-swimming larva
(d) All of the above
Show Answer & Explanation

Answer: (d) All of the above

Explanation:
1. All three characters are correct for echinoderms.

Teacher's Note:
1. Echinoderms have a water vascular system.

Question 22: Phylum Arthropoda is the largest phylum. Which is a common character?
(a) Jointed appendages
(b) Open blood circulation
(c) Both 1 and 2
(d) Excretion through flame cells
Show Answer & Explanation

Answer: (c) Both 1 and 2

Explanation:
1. Arthropods have jointed legs and open circulation
2. They excrete by Malpighian tubules, not flame cells.

Teacher's Note:
1. Flame cells belong to flatworms.

Question 23: Which animal name is correctly matched with its common name?
(a) Ancylostoma : hookworm
(b) Octopus : squid
(c) Antedon : brittle star
(d) Laccifer : locust
Show Answer & Explanation

Answer: (a) Ancylostoma : hookworm

Explanation:
1. Ancylostoma is the hookworm
2. Antedon is a sea lily, Laccifer is the lac insect, and an octopus is not a squid.

Teacher's Note:
1. Learn common names with scientific names.

Question 24: Which CANNOT be considered a character of Aschelminthes?
(a) Pseudocoelomate
(b) Bilaterally symmetrical
(c) Organ system level
(d) Monoecious
Show Answer & Explanation

Answer: (d) Monoecious

Explanation:
1. Roundworms are usually dioecious with separate sexes.

Teacher's Note:
1. Females are often longer than males.

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Animal Kingdom Objective Questions & Solutions for NEET Biology

About Animal Kingdom MCQs for NEET Biology

Review structured objective questions for NEET Biology Animal Kingdom. Built according to official NEET guidelines, these MCQ sets support daily revision and core concept reinforcement.

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