Assertion : Less than 1% of the water reaching the leaves is used in photosynthesis and plant growth.

Reason: Most of the water is lost through the stomata in leaves by transpiration

if both A and R are true and R is the correct explanation of A

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if both A and R are true but R is not the correct explanation of A

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if A is true but R is false

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if both A and R are false.

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Solution

The correct option is A
if both A and R are true and R is the correct explanation of A

Most of the water is lost through transpiration and the plant gets the water for photosynthesis from the atmosphere. .

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Similar questions

Assertion: Less water content in soil decreases transpiration in plants.

Reason: Dehydration leads to closure of stomata on the surface of leaves.

Which of the following statement is correct :
1. At night, these guard cells swell with water and become bloated, opening the stoma.
2. During the day, the guard cells release their water and the stomata close.
3. More than 97% percent of water reaching the leaves is used in plant growth and photosynthesis.
4. The rate of transpiration can be easily demonstrated by cobalt chloride paper test.

Q. Case: Transpiration is the evaporative loss of water by plants. It occurs mainly through the stomata in the leaves. Besides the loss of water vapour in transpiration, exchange of oxygen and carbon dioxide in the leaf also occurs through pores called stomata. Normally stomata remain open during the day and close at night.

Based on the above case answer the following question:

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening, carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of the following options.

Q. Fill in the-blanks with suitable terms given below:
(Fast, Leaves, Stomata, Closed, Transpiration, Humid)
Most water gets evaporated from the plant from its ..........

Q. Case: Transpiration is the evaporative loss of water by plants. It occurs mainly through the stomata in the leaves. Besides the loss of water vapour in transpiration, exchange of oxygen and carbon dioxide in the leaf also occurs through pores called stomata. Normally stomata remain open during the day and close at night.

Based on the above case answer the following question:

Which of the following is not a purpose of transpiration?

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Assertion : Less than 1% of the water reaching the leaves is used in photosynthesis and plant growth. Reason: Most of the water is lost through the stomata in leaves by transpiration

The correct option is A if both A and R are true and R is the correct explanation of A Most of the water is lost through transpiration and the plant gets the water for photosynthesis from the atmosphere. .

Assertion : Less than 1% of the water reaching the leaves is used in photosynthesis and plant growth.

Reason: Most of the water is lost through the stomata in leaves by transpiration

The correct option is A
if both A and R are true and R is the correct explanation of A

Most of the water is lost through transpiration and the plant gets the water for photosynthesis from the atmosphere. .