Assertion [A]: Cactus does not perform photosynthesis.

Reason [R]: Spines are present in cactus.

A is false and R is true

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Both A and R are true but R is not the correct explanation for A

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Both A and R are true and R is a correct explanation for A

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A is true and R is false

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Solution

The correct option is A A is false and R is true

In cactus, the leaves are modified into spines which are needle-like structures. These spines help in the prevention of water loss and provides protection against the predators.

Stems in cactus are thick and fleshy which helps in storing the water. It contains the green colour pigment called chlorophyll which traps sunlight to perform photosynthesis.

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Similar questions

Q. Assertion [A]: Cactus does not perform photosynthesis.

Reason [R]: Spines are present in cactus.

Assertion (A): In Cactus, leaves are reduced to small spines with less surface area.
Reason (R): Spines helps in preventing the cactus from losing water through evaporation.

Q. Consider the following statements about cactus:
1. The leaves are reduced to spines.
2. The stem does the photosynthesis.
Which of the statements given above is/are correct?

What is the main reason why the leaves in a cactus are reduced to spines?

Why are the leaves reduced to spines in the cactus?

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Assertion [A]: Cactus does not perform photosynthesis. Reason [R]: Spines are present in cactus.

Assertion [A]: Cactus does not perform photosynthesis.

Reason [R]: Spines are present in cactus.