The stomata take in and give out
(A) hydrogen.
(B) oxygen carbon dioxide, water.
(C) water and oxygen only.
(D) carbon dioxide only.

(a) Only B is correct.
(b) Only A is correct.
(c) Both B and C are correct.
(d) Both B and D are correct.

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Solution

(a) Only B is correct.
The stomata aid in the gaseous exchange of oxygen and carbon dioxide. They also take part in the process of transpiration.

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The stomata take in and give out (A) hydrogen. (B) oxygen carbon dioxide, water. (C) water and oxygen only. (D) carbon dioxide only. (a) Only B is correct. (b) Only A is correct. (c) Both B and C are correct. (d) Both B and D are correct.

(a) Only B is correct. The stomata aid in the gaseous exchange of oxygen and carbon dioxide. They also take part in the process of transpiration.

The stomata take in and give out
(A) hydrogen.
(B) oxygen carbon dioxide, water.
(C) water and oxygen only.
(D) carbon dioxide only.

(a) Only B is correct.
(b) Only A is correct.
(c) Both B and C are correct.
(d) Both B and D are correct.

(a) Only B is correct.
The stomata aid in the gaseous exchange of oxygen and carbon dioxide. They also take part in the process of transpiration.