Animal Kingdom NEET MCQs with Explanation, Practice Now

What is Animal Kingdom?

The Animal Kingdom is a classification of all animals found on Earth. Animals are divided into different groups based on their body structure, type of skeleton, method of reproduction, and other features. Scientists have divided animals into different phylums to make studying easier. Animal Kingdom is a part of the five-kingdom classification system given by Robert Whittaker. This classification includes Monera, Protista, Fungi, Plantae, and Animalia.

Also Check:

• Free Toppers Notes for NEET
• Free NEET Lectures by PW Faculties

Animal Kingdom NEET MCQs with Explanations

Below are some important MCQs from the Animal Kingdom chapter:

Q1 The following statements show some characteristics of an organism. Identify it.
I. It possesses longitudinal and circular muscles which help in locomotion.
II. A closed circulatory system is present.
III. It also possesses lateral appendages.
IV. Neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord.
V. Reproduction is sexual.

1. Ancylostoma (Hookworm)

2. Nereis

3. Chaetopleura

4. Clarias (Magur)

Answer: B. Nereis

Explanation: Members of phylum Annelida possess longitudinal and circular muscles that help in locomotion. A closed circulatory system is present. The neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord. Reproduction is sexual. Nereis possesses lateral appendages, parapodia, which help in swimming.

Q2 Echinoderms are:

1. Triploblastic.

2. coelomate animals.

3. exclusively marine.

4. All of these.

Answer: (D) All of these.

Explanation: Echinoderms are triploblastic, coelomate, and exclusively marine animals.

Q3 Given below are two statements:
Statement I: All triploblastic animals are true coelomates.
Statement II: In true coelomates, mesoderm is present as scattered pouches in between the ectoderm and endoderm.
In the light of the above statements, choose the most appropriate answer from the options given below:

1. Both Statement I and Statement II are correct.

2. Statement I is correct, but Statement II is incorrect.

3. Statement I is incorrect, but Statement II is correct.

4. Both Statement I and Statement II are incorrect.

Answer: (D) Both Statement I and Statement II are incorrect.

Explanation: Not all triploblastic animals are true coelomates. Some triploblastic animals, like flatworms, are acoelomates. In pseudocoelomates, the mesoderm is present as scattered pouches in between the ectoderm and endoderm.

Q4 Identify the figures given for the embryonic organisation of animals and mark I, II, III, and IV.

1. I- Mesoglea, II- Ectoderm, III- Endoderm, IVMesoderm

2. I- Endoderm, II- Mesoderm, III- Mesoglea, IVEctoderm

3. I- Mesoderm, II- Mesoglea, III- Ectoderm, IVEndoderm

4. I- Ectoderm, II- Endoderm, III- Mesoglea, IVMesoderm

Answer: (D) I- Ectoderm, II- Endoderm, III- Mesoglea, IVMesoderm

Explanation: Embryonic organization in animals can be diploblastic or triploblastic. In diploblastic animals, two germ layers, ectoderm and endoderm, are present with an intervening non-cellular mesoglea. Triploblastic animals possess an additional mesodermal layer between the ectoderm and endoderm, contributing to the development of muscles and organs.

Q5 The characteristic of Doliolum is the presence of a notochord:

1. Only in larval tails.

2. from head to tail region.

3. throughout life in adults.

4. Both (B) and (C)

Answer: (A) Only in larval tail.

Explanation: Urochordates, also known as tunicates, exhibit a notochord only in their larval stage. This feature is lost as they metamorphose into adults, which become sessile filter-feeders.

Q6 Which of the following is correctly matched?

1. Polyp - Adamsia

2. Flatworm- Ancyclostoma

3. Insect - Aplysia

4. Water vascular system -Sycon

Answer: (A) Polyp - Adamsia

Explanation: Adamsia (Sea anemone) exists in a polyp form, which is sessile and cylindrical, differing from the medusa form that is free-swimming.

Q7 Which of the following features is common in Pleurobrachia and Ctenoplana?

1. Cellular level of organisation

2. Triploblastic

3. Asexual reproduction

4. Radially symmetrical

Answer: (D) Radially symmetrical

Explanation: Pleurobrachia and Ctenoplana belong to the phylum Ctenophora. Ctenophores are radially symmetrical, diploblastic organisms with a tissue level of organization. Reproduction takes place only by sexual means.

Q8 Given below are two statements:
Statement I: The skin of cartilaginous fishes is tough, containing minute placoid scales.
Statement II: In cartilaginous fish, teeth are modified placoid scales that are directed forward.
In the light of the above statements, choose the most appropriate answer from the options given below:

1. Both Statement I and Statement II are correct.

2. Statement I is correct but Statement II is incorrect.

3.  Statement I is incorrect but Statement II is correct.

4. Both Statement I and Statement II are incorrect.

Answer: (B) Statement I is correct, but Statement II is incorrect.

Explanation: Cartilaginous fish have tough skin with placoid scales, which are structurally similar to teeth. However, their teeth are not forward-directed; rather, they are backwardly directed, aiding in feeding efficiency.

Q9 The characteristics given below are associated with which class?
I. Body is covered by dry and cornified skin, epidermal scales or scutes.
II. Do not have external ear openings.
III. Mode of locomotion is creeping or crawling.
IV. Some members shed their scales as skin cast.
V. Sexes are separate.

1. Aves

2. Amphibia

3.  Reptilia

4. Osteichthyes

Answer: (C) Reptilia

Explanation: Class Reptilia: The Body is covered by dry and cornified skin, epidermal scales, or scutes. They do not have external ear openings. Tympanum represents the ear. Snakes and lizards shed their scales as skin cast. Sexes are separate.

Q10 Identify the given organisms and the class they belong to:

1. a- Scoliodon, b-Carcharodon, ClassCyclostomata

2. a- Pristis, b- Carcharodon, Class- Osteichthyes

3.  a- Scoliodon, b- Pristis, Class- Chondrichthyes

4. a- Pristis, b- Carcharodon, Class- Cyclostomata

Answer:  (C) a- Scoliodon, b- Pristis, Class- Chondrichthyes
Explanation: Scoliodon and Pristis belong to the class Chondrichthyes, which consists of cartilaginous fish. These fish have skeletons made of cartilage, placoid scales, and are mostly marine predators.

Q11 Which of the following characteristics is a common feature for Aves and Mammals

1. Warm-blooded body

2. Wings

3. Viviparity

4.  Mammary glands

Answer: (A) Warm-blooded body

Explanation: Both Aves and Mammals are endothermic, meaning they can regulate their body temperature independent of the environment. This helps them survive in diverse climatic conditions.

Q12 Select the correct option for the diagram.

1. Ornithorhynchus (Platypus); Oviparous

2. Ornithorhynchus (Platypus); Viviparous

3. Delphinus (Common dolphin); Oviparous

4. Chameleon (Tree lizard); Viviparous

Answer: (A) Ornithorhynchus (Platypus); Oviparous

Explanation: Ornithorhynchus (Platypus) is a monotreme, a unique group of egg-laying mammals. Unlike other mammals, monotremes do not give birth to live young but instead lay eggs.

Q13 Which one of the following sets of animals shares a four-chambered heart?

1. Amphibians, Reptiles, and Birds

2. Crocodiles, Birds, and Mammals

3. Crocodiles, Lizards, and Turtles

4. Lizards, Mammals, and Birds

Answer: (B) Crocodiles, Birds, and Mammals

Explanation: A four-chambered heart allows complete separation of oxygenated and deoxygenated blood, leading to efficient circulation. Crocodiles, unlike other reptiles, have a completely divided ventricle, similar to birds and mammals.

Q14 Which of the following is dioecious?

1. Taenia

2. Fasciola

3. Ascaris

4. Earthworm

Answer: (C) Ascaris

Explanation: Ascaris (Roundworm) is dioecious, i.e., males and females are distinct. Taenia, Fasciola, and Earthworm are monoecious, i.e., they have both the male and female reproductive organs in the same individual.

Q15 Read the following statements (I-V).
I. Cyclostomes have a sucking and circular mouth with jaws.
II. Flame cells helps in excretion in hemichordates.
III. Air bladder helps to regulate buoyancy.
IV. Ichthyophis is limbless amphibia.
V. The body of arthropods is covered by chitinous exoskeleton.
Which of the above statements are incorrect?

1.  I and II only

2.  II, III and IV only

3.  III, IV and V only

4. I, III and V only

Answer: (A) I and II only

Explanation: Cyclostomes have a sucking and circular mouth without jaws. The excretory organ in hemichordates is the proboscis gland.