Question

The largest group of animals living on the land is
A. Worm
B. Snakes
C. Insects
D. Frogs

Answer 1

Hint: It is fall in the phylum arthropoda. Their body has a chitinous exoskeleton. They have poda-appendages. Their body comprises head, thorax, and abdomen.

Complete Answer:
Terrestrial species live on the land, or within the burrows. These species have well-developed mechanisms of locomotory organs such as skin, legs, and wings and breathing organs such skin, lungs, etc. For survival, all other mechanisms are well adapted, such as sensory organs.

Now, let us find the solution from the options-
- Worms fall in the phylum Aschelminthes. They are aquatic and terrestrial or parasitic animals and plants. They are not considered as the largest phylum of Animalia. Therefore, the option A is incorrect.
- Snakes and frogs fall in the phylum chordata. Frogs are found in the class Amphibia and snakes are found in the class reptilia. They are not considered as the largest phylum of Animalia. Therefore, the options B and D are incorrect.
- The largest phylum of animals for which the Insecta class has the greatest number of species is the Arthropoda. Insects are the largest animal community. Insects include ants, butterflies, bees, bugs, moths, cockroaches, mosquitoes, grasshoppers, etc. Arthropods make up about two-thirds of all the named organisms on earth.

Thus, the correct answer is option (C) insect.

Note: Insects comprise up about 75 percent of the Arthropoda phylum. They are present in a range of environments and can crawl, run, leap and swim. In protected areas, most lay eggs and only a few species show parental care. To shield themselves from predators or to kill prey, they also shield themselves with venom and use camouflage.