Question

Match the excretory organ to the correct organism.

• A. Earthworm
• B. Flatworm
• C. Paramecium
• D. Cockroach

Answer 1

Paramecium excretes wastes and water through contractile vaculoes.

Annelids such as earthworms have dedicated primitive kidneys called nephridia.

The flatworms are the simplest animals to have a dedicated excretory system; they possess excretory structures called protonephridia.

A Cockroach has an excretory system that consists of branching tubules (Malpighian) extending from the alimentary canal. The Malphigian tubules absorb solutes, water, and wastes from the surrounding body fluid.