Paper 1 - Excretion Flashcards
1
Q
What is the origin of carbon dioxide as a waste product of plant metabolism?
A
- O2 is taken in via stomata for aerobic respiration
- CO2 is excreted via the stomata as a waste product of plant metabolism
2
Q
What is the origin of oxygen as a waste product of plant metabolism?
A
- CO2 is taken in via stomata for photosynthesis
- O2 is excreted via the stomata as a waste product of plant metabolism
3
Q
What is the excretory product of the lungs?
A
CO2
4
Q
What is the excretory product of the kidneys?
A
Urea
5
Q
What are the excretory products of the skin?
A
- Water
- Mineral ions