Question

$C_4$ plants are abundant in

• A. Temperate region with more humid conditions.
• B. Temperate region with more dry conditions.
• C. Tropical region with more humid conditions.
• D. Tropical region with more dry conditions.

Answer 1

The correct option is D Tropical region with more dry conditions.

Plants using the C${}_4$ (Hatch-Slack) photosynthetic pathway are key for global food production and account for 25% of terrestrial primary productivity, mostly in relatively warm, dry regions.

So the correct option is 'Tropical region with more dry conditions'.