Question

How are the main classes of arthropods classified according to the presence of a larval stage during their embryonic development?

Answer 1

In crustaceans, some species undergo direct development whereas others undergo indirect development. In insects, some species do not have a larval stage (ametabolic insects), whereas others go through indirect development beginning with an egg stage followed by a nymph stage (hemimetabolous insects).Moreover,other insects go through indirect development beginning with a larval stage (holometabolous insects).

The transformation of a larva into an adult insect is called metamorphosis. Hemimetabolous insects undergo metamorphosis while holometabolous insects undergo complete metamorphosis