Free Kingdom Animalia MCQs with Answers

• A. (ii), (iii) and (iv)
• B. Only (i) and (iv)
• C. Only (i) and (ii)
• D. (i), (iii) and (iv)

Explanation: Reptiles have two auricles and a partly divided ventricle except crocodiles which have a four chambered heart.

• A. Toothless jaws
• B. Functional postanal tail
• C. Ovoparity
• D. Homoiothermy

Explanation: Homoiothermy is the maintenance by an animal of its internal body temperature at a relatively constant value by using metabolic processes…

• A. They all possess dorsal heart.
• B. None of them is aquatic
• C. They all belong to the same phylum.
• D. They all have jointed paired appendages.

Explanation: Nereis, scorpion, cockroach and silver fish are all invertebrates and thus possess dorsal heart.

• A. Book lungs and antennae
• B. compound eyes and anal cerci
• C. Jointed legs and chitinous exoskeleton
• D. Green gland and trachea

Explanation: Centipede, cockroach, and crab all belong to phylum arthropoda which are characterized by jointed legs and chitinous exoskeleton.

• A. Kangaroo, hedgehog, dolphin and loris
• B. Lion, bat, whale and ostrich
• C. Platypus, penguin, bat and hippopotamus
• D. Shrew, bat, cat and kiwi

Explanation: Kangaroo, hedgehog, dolphin and Loris are mammals and thus give brith to young ones. Ostrich and kiwi are brids that lay eggs.

• A. Peripatus
• B. King crab
• C. Sphenodon
• D. Archaeopteryx

Explanation: The earliest known bird fossil is that of archaeopteryx, two species of which have been found from rocks of Jurassic period of earth's…

• A. Arctic tern
• B. Salmon
• C. Siberian crane
• D. Salamander

Explanation: Salamander- These animals do not migrate but when the snow starts to melt and when it rains they tend to go to a warmer place so they…

• A. Mollusca and Chordata
• B. Platyhelminthes and Arthropoda
• C. Echinodermata and Annelida
• D. Annelida and Arthropoda.

Explanation: The term metamerism refers to a linear repetition of parts in an animal body.

• A. Absence of body cavity
• B. Bilateral symmetry
• C. Radial symmetry
• D. Presence of pseudocoel

Explanation: Platyhelminthes do not have body cavity so they are acoelomates. In annelids, the body cavity is true and schizocoelous.

• A. Prawn has two pairs of antennae
• B. Nematocysts are characteristics of the phylum cnidaria
• C. Millepedes have two pairs of appendages in each segment of the body
• D. Animals belonging to phylum porifera are marine and fresh water

Explanation: Prawns have one pair of antennae, one on either side, just below the antennules. They are sensory, excretory and balancing in function.

• A. Thecodont dentition
• B. Alveolar lungs
• C. Ten pairs of cranial nerves
• D. Seven cervical vertebrae

Explanation: Mammals have twelve pairs of cranial nerves. Ten pairs of cranial nerves are present in fish and amphibians.

• A. Insecta
• B. Myriapoda
• C. Crustacea
• D. Arachnida

Explanation: Class insecta is the largest group not only of Arthropoda but of all the animal kingdom and has great variety.

• A. Annelida
• B. Mollusca
• C. Cnidaria
• D. Echinodermata

Explanation: The animals belonging to phylum echinodermata, have developed bilateral symmetry, as is evident, from the study of structure of their…

• A. Fish were amphibians in the past
• B. Fish evolved from froglike ancestors
• C. Frogs will have gills in future
• D. Frogs evolved from gilled ancestors.

Explanation: Amphibians are on the border line between aquatic and true terrestrial animals.

• A. Unicellular or acellular
• B. Multicellular without any tissue organization
• C. Multicellular with a gastrovascular system
• D. Multicellular having tissue organization but no body cavity.

Explanation: Sycon, belonging to the Phylum Porifera, are multicellular organisms with cellular level of body organisation.

• A. Redia and miracidium
• B. Cercaria and redia
• C. Metacercaria and cercaria
• D. Miracidium and metacercaria

Explanation: The life cycle of F. hepatica is completed in two hosts. The primary host, in which the adult fluke lives, is a sheep, while the…

• A. Cockroaches
• B. Frog
• C. Humans
• D. Sunflowers

Explanation: In cockroaches, the compound eyes are a pair of large, black, kidney shaped organs situated dorso-laterally on the head, one on either…

• A. Pheretima - Sexual dimorphism
• B. Musca - Complete metamorphosis
• C. Chameleon - Mimicry
• D. Taenia - Polymorphism

Explanation: In Musca, development is indirect with complete metamorphosis (holometaboly) including four stages i.e egg, larva, pupa and adult.

• A. (A) and (B)
• B. (A), (B) and (C)
• C. (B) and (D)
• D. (C) and (D).

Explanation: Silver fish is an insect in which respiration occurs by tracheae. These communicate with the exterior by paired apertures, called…

• A. Sponge
• B. Earthworm
• C. Cockroach
• D. Hydra

Explanation: Hydra belongs to the phylum coelenterata and has nerve cells but no brain. Its nervous system consists of nerve cells and their processes.