Question

The excretory structures of flatworms are

• A. Malpighian tubules
• B. Green glands
• C. Metanephridia
• D. Flame cells

Answer 1

The correct option is D

Flame cells

The correct option is D.

Explanation of correct option:

1. Flame cells, which are found throughout the mesenchyme, are flatworms' excretory structures.
2. The cytoplasm of a flame cell is granular, and it has a nucleus.
3. Flame cells act as a kidney, removing waste products.

Explanation of incorrect options:

Option A:

Malpighian tubules are the structures that are present in insects and they are helpful in the process of excretion and osmoregulation.

Option B:

Green glands are excretory structures found on each side of the head area of decapod crustaceans that are empty near the base of the antennae.

Option C:

Metanephridia is a type of excretory gland found in invertebrates such as annelids, arthropods and Mollusca.

Final Answer: The excretory structures of flatworms are flame cells.