Question Detail

ZOO 101 ZOO 101 Past Questions Objective Question

Question

Excretion is defined on the slides as:
Options
A Removal of undigested food through defecation
B Removal of metabolic wastes and excess substances from cellular activities that build up in bodily fluids
Correct Answer
C Absorption of nutrients from the gut into the bloodstream
D Secretion of digestive enzymes into the GI tract
Correct Answer

Option B is the correct answer.

Detailed Explanation

Excretion is the removal of metabolic wastes and excess substances produced by cellular activities that accumulate in bodily fluids. This distinguishes it from egestion (removal of undigested food).

Hint

This process involves eliminating waste products from metabolism, not undigested material.

Question Info