Some water plants are placed in a jar of water. The jar is then left in a sunny place. Little bubbles can be seen coming out of the plant. These bubbles contain__________.
(a) oxygen
(b) water vapour
(c) carbon dioxide
(d) hydrogen

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Solution

(a) oxygen

In aquatic plants, photosynthesis takes place. Such plants release oxygen into the water, which can be seen in the form of bubbles.

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Some water plants are placed in a jar of water. The jar is then left in a sunny place. Little bubbles can be seen coming out of the plant. These bubbles contain__________. (a) oxygen (b) water vapour (c) carbon dioxide (d) hydrogen

(a) oxygen In aquatic plants, photosynthesis takes place. Such plants release oxygen into the water, which can be seen in the form of bubbles.

Some water plants are placed in a jar of water. The jar is then left in a sunny place. Little bubbles can be seen coming out of the plant. These bubbles contain__________.
(a) oxygen
(b) water vapour
(c) carbon dioxide
(d) hydrogen

(a) oxygen

In aquatic plants, photosynthesis takes place. Such plants release oxygen into the water, which can be seen in the form of bubbles.