The process of taking gaseous carbon dioxide or oxygen by leaves is termed peristomal diffusion or diffusion through stomata present on leaves.
Plants take up carbon dioxide or oxygen from the air through their leaves as they have several stomata on their surface. The small holes or openings in the underside of the leaf are called stomata.
- Diffusion through stomata also helps oxygen, produced in photosynthesis, to leave the leaf.
- The diffusion of gaseous carbon dioxide or oxygen is proportional to the concentration difference between the atmosphere and leaves.
- The loss of water vapor in transpiration also occurs through stomata.
- peristomal diffusion or diffusion through the leaves allows the gaseous exchange.
Thus, the correct answer is - peristomal diffusion or diffusion through stomata present on leaves.
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