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Question

Which of the following options are correct based on the statements given?

Statement 1: Gaseous exchanges in plants usually occur on the top side of leaves.

Statement 2: Tiny pores called stomata facilitate this exchange.

Statement 3: The gases exchanged are carbon dioxide and water vapor only.


A

Only statements 1 and 3 are correct.

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B

Only statement 2 is correct.

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C

All statements are correct.

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D

Only Statements 2 is correct.

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Solution

The correct option is B

Only statement 2 is correct.


Tiny pores called stomata are responsible for the exchange of gases in the leaves and stem of the plant. These gases include carbon dioxide and water vapour as well as the byproduct oxygen. Thus statement 3 is incorrect.

While it is true that some plants such as water lilies have stomata on the top side of their leaves, most plants however have it on their underside. Thus, statement 1 is incorrect.


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