Question

Explain how a molecule of carbon dioxide from the atmosphere reaches the site of photosynthesis in leaf

Answer 1

Answer:

Carbon dioxide

It moves by diffusion through small holes in the underside of the leaf called stomata . ... The lower part of the leaf is a spongy layer with loose-fitting cells. These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.

Answer 2

Answer:

Explanation:

1. carbon dioxide diffuses from out of the leaf to the inner parts of the leaf through the concentration gradient

2. it gets in the leaf through the holes in the lower epidermis called stomata

3. it moves across the air spaces

4. it goes across the cell wall, cell membrane, and cytoplasm to reach the chloroplast