Question Detail

ZOO 101 The Excretory System Objective Question

Question

How do nephridia in earthworms function?
Options
A They are bathed in blood from an open circulatory system.
B They are surrounded by capillaries and filter wastes from the blood.
Correct Answer
C They directly absorb wastes from the gut.
D They release enzymes to break down wastes.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Nephridia are surrounded by capillaries and filter wastes from the blood to form a dilute urine.

Hint

They work by filtration from the blood.

Question Info