Question

Give one word answer for the following.

1. The presence of this substance is taken as an evidence that photosynthesis has occurred.

2. Structures present on the undersurface of leaves for exchange of gases.

3. Pigment necessary for photosynthesis.

4. Presence of starch in leaves is tested by using this solution. ​

Answer 1

Explanation:

1. the presence of starch in a leaf is direct evidence that photosynthesis has taken place
2. .The only way for gases to diffuse in and out of the leaf is though small openings on the underside of the leaf, the stomata. ... These stomata can open and close according to the plant's needs. The tissues of the leaf in between the epidermal cells, into which gases diffuse from the stomata, are called mesophyll.
3. Chlorophyll
4. Iodine test

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Answer 2

1. Starch

2. Stomata

3. Chlorophyll

4. Iodine solution

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