Question

When carbon dioxide is being used in photosynthesis what is it's diffusion pathway in a leaf after entering a stomata?​

Answer 1

Answer:

Explanation for correct option:

Option C

∙ There are minute pore-like structures called stomata, on the surface of the leaf in plants.

∙ The stomata are responsible for the exchange of gases.

∙ The carbon dioxide which is required for photosynthesis enters through the stomata and the oxygen which is formed as a product of photosynthesis is also released from the stomata.

∙The opening and closing of the stomata is crucial for the photosynthetic and respiratory reactions to take place.

Explanation for incorrect options:

Option A: Chlorophyll is a green-coloured pigment present in the leaves of plants; it helps the plants, trap the light energy to make food.

Option B: Chloroplast is an organelle present in the plant cells. It contains chlorophyll, the green-coloured photosynthetic pigment, and is the site for photosynthesis.

Option D: Epidermis is the tissue that provides mechanical strength to the outermost region of the plant and protects the internal tissues.

Conclusion: Carbon dioxide enters the leaves through stomata.

Explanation:

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Answer 2

Answer:

Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata. Guard cells control the size of the stomata so that the leaf does not lose too much water in hot, windy or dry conditions.

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