Question

The internal source of CO2 in CAM plants is ______
a) Oxalo-acetic acid
b) acid
c) RUBP
d) PEPA

Answer 1

RUBP is correct answer

Answer 2

Hey Tanya,
Crassulacean acid metabolism pathaway is aka CAM photosynthesis.

● Answer - (a) Oxalo-acetic acid
The internal source of CO2 in CAM plants is *oxalo-acetic acid*.

◆ Explanation -
- CAM photosynthesis is a carbon fixation pathway that evolved in some plants as an adaptation to arid conditions.
- In these plants, stomata remain closed during day to reduce photo respiration.
- Stomata are open during night for collection of CO2.
- CO2 thus obtained is fixed in the form of oxaloacetate.

Hope this helped you. Thanks for asking..