Question

Do all animals have bones? Give examples.

Answer 1

Not every animal is composed of bones. Some of the animals that do not have bones in their structure are as follows:

1. Earthworm: The skeletal system of an earthworm is formed by liquid. The muscles of earthworm squeeze against the liquid material and help in the movement of earthworm.

2.Cockroach and snake: The bodies of cockroach and snakes are enclosed in a protective shell called exoskeleton. This exoskeleton is not made up of bones.