Exoskeleton is NOT found in the

Explanation

In Biology, exoskeleton is a hard outer covering that provides support and protection to an organism. The question is asking which of the given organisms does NOT have an exoskeleton. The options are maggot, mosquito larva, earthworm, caterpillar, and temtia. Out of the given options, the correct answer is earthworm. Earthworms do not have an exoskeleton. Instead, they have a soft, moist, and flexible body that is protected by a thin cuticle. The cuticle is a layer of skin that covers the earthworm's body and helps it to retain moisture. On the other hand, insects such as maggots, mosquito larvae, caterpillars, and temtia all have exoskeletons to provide support and protection to their bodies. The exoskeleton is made up of a tough and rigid material called chitin, which covers the entire body of the insect. It is important to know the body structures of different organisms as they play a vital role in their survival and adaptation to their environment.