I think it is because they need food to stay alive and they need to grow too.
larva stage
The larva eats, but the pupa can't
instrar are also called larva stage in this stage the larva will eat and eat to store food while it's in the pupa
The stage after the larva stage is typically the pupa stage. During this stage, the insect undergoes metamorphosis and transforms into its adult form. The pupa is often enclosed in a protective casing, such as a cocoon or chrysalis, depending on the species.
The larval stage of a butterfly usually lasts from two weeks to about a month, and it is the main feeding stage for the butterfly. The larvae, called caterpillars, eat almost constantly and grow at an astonishing rate.
Monarch butterflies go through a four stage development cycle in their lifespans. The four stages of the monarch butterfly are the egg, the caterpillar or larvae, the chrysalis or pupa, and the butterfly.
Ant larvae mainly consume liquid food provided to them by adult worker ants, such as regurgitated food or secretions produced by the workers. Ant pupae do not eat during this stage of development, as they are in a non-feeding stage preparing to undergo metamorphosis into adult ants.
caterpilar eat larva
As a chick they eat small insects, but as an adult it eats grass and seeds.
no they do not eat beetles. they eat leaves.
yes. beetles would eat almost anything that's dead.
A sawfly larva eats plant leaves and stems in its larva stage. The adult female sawfly uses her incisors to cut into the plant leaves and stems before laying eggs in the incision.