Question Detail

ZOO 101 The Excretory System Objective Question

Question

How do protists and hydra excrete metabolic wastes like ammonia and carbon dioxide?
Options
A Through specialized kidneys.
B Via Malpighian tubules.
C Wastes diffuse out of cell membranes or are excreted through active transport.
Correct Answer
D They store wastes in vacuoles permanently.
Correct Answer

Option C is the correct answer.

Detailed Explanation

In simple organisms like protists and hydra, wastes diffuse out of cell membranes or are excreted through active transport due to direct contact with the environment.

Hint

They have no complex excretory organs.

Question Info