Excretion

Question 1

What are Carbon dioxide and oxygen waster products of and where are they lost?

Answer 1

Carbon dioxide and oxygen are waste products of metabolism and are lost through the stomata of a leaf.

Question 2

What are the excretory products of the lungs, kidneys and skin?

Answer 2

Lungs - Carbon Dioxide. Kidneys - urine (urea, water and salt ions). Skin - Sweat (salt ions and water).