Question

How do the three types of photosynthesis (C3, C4, and CAM) found in land plants differ?

a) C3 uses the Calvin cycle, while C4 and CAM use the Hatch-Slack pathway.
b) C4 plants have a unique leaf anatomy for better CO2 fixation compared to C3 and CAM plants.
c) CAM plants open stomata at night to minimize water loss, unlike C3 and C4 plants.
d) All of the above.

Answer 1

d) All of the above. C3, C4, and CAM photosynthesis differ in terms of their carbon fixation pathways, leaf anatomy, and stomatal behavior. Option d is the correct answer as all statements (a, b, and c) are true.

Step-by-step explanation:

How do the three types of photosynthesis (C3, C4, and CAM) found in land plants differ?

1. a) C3 uses the Calvin cycle, while C4 and CAM use the Hatch-Slack pathway.
2. The C3 photosynthesis pathway utilizes the Calvin cycle for carbon fixation, while both C4 and CAM photosynthesis pathways use the Hatch-Slack pathway.
3. b) C4 plants have a unique leaf anatomy for better CO2 fixation compared to C3 and CAM plants.
4. C4 plants have a specialized leaf anatomy with a compartment called bundle sheath cells, which allows them to concentrate CO2, resulting in better CO2 fixation compared to C3 and CAM plants.
5. c) CAM plants open stomata at night to minimize water loss, unlike C3 and C4 plants.
6. CAM plants open their stomata at night to take up CO2, which is then stored as malic acid and used for carbon fixation during the day. This helps minimize water loss in arid environments.
7. d) All of the above.
8. All of the statements (a, b, and c) are correct, making option d (All of the above) the correct answer.