Question

what is crustacea ? and give some examples..... and by which way these take respiration.​

Answer 1

Answer:

crustacea are a large group of aquatic arthropods

ex- crabs ,lobsters , shrimps, woodlice, barnacles.

As they are aquatic creatures they breath through gills .

Answer 2

Crustaceans belongs to phylum Arthropoda and it forms a very large group which includes crabs, lobsters, shrimps etc. They breath through gills, so most of them live in wet places and many are aquatic.