Question

The bulk fixation of carbon through photosynthesis takes place in:

• A. Crop plant and tropical rain forest
• B. Tropical rain forest
• C. Crop plants
• D. Oceans

Hint:

While oceans contribute most globally, crop plants are vital for carbon fixation on land, especially in agriculture.

Answer 1

The Correct Option is C

Crop plants contribute significantly to carbon fixation, especially in managed agricultural ecosystems.
Tropical rain forests are important but contribute less compared to oceanic phytoplankton globally.
Oceans (especially phytoplankton) contribute about 50% of global carbon fixation.
The options mix terrestrial and aquatic sources; crop plants have major localized carbon fixation roles.