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Question

With respect to the given assertion and reason, choose the correct option.
Assertion (A): Water and minerals are absorbed from roots and are transported upwards to various parts of the plant.
Reason (R): The process by which a substance absorbed from the roots of the plant is moved to the upper part of the plant is known as active transport.


A
A is correct but R is incorrect
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B
A is incorrect and R is correct
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C
Both A and R are correct and R is the correct explanation of A
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D
Both A and R are incorrect
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Solution

The correct option is A

Explanation:

Assertion statement:

  1. Plants synthesise their own food and absorb water and minerals from roots.
  2. They need to transport the food and water to all parts of plants for their sustenance.
  3. The process of transportation where substance absorbed in one part of the plant is moved to another part of the plant is essential for survival.
  4. The water and absorbed minerals are transported to the upper parts of the plant from roots by xylem vessels.

Reason statement:

  1. Osmosis, diffusion, and active transport are the three processes by which plants can absorb water and other minerals from the soil.
  2. Water moves from the roots to all other parts due to capillary action and the pull created due to the evaporation of water from the leaves.
  3. This is a passive movement of the water as it does not use ATP for the transport.

  4. In active transport the ATPs are used in the process.

  5. Hence, the process by which a substance absorbed from the roots of the plant is moved to the upper part of the plant is not an active transport.

Final answer: A is correct but R is incorrect.


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