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Guttation and Bleeding.

Loss of water...

Question

Loss of water from the tip of the leaf pores in a plant is known as

A

Transpiration.

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B

Guttation.

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C

Evaporation.

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D

Respiration.

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Solution

The correct option is B Guttation.
The soil rich in moisture content, water floods a plant root system. Leaves can retain only a finite amount of water. Excess water i.e xylem sap is given out from the roots through pores or edge of leaves and this process is called guttation. Thus the correct answer is option B.

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The loss of water as water vapour from the aerial parts of a plant is known as

(a) evaporation (b) perspiration

(c) guttation (d) transpiration

Transpiration is best defined as

(a) loss of water by the plant.

(b) evaporation of water from the aerial surfaces of a plant.

(c) loss of water, as water vapour, by a plant.

(d) release of water by a plant into the atmosphere.

Q. Match the terms to these definitions:
Chresard, guttation, transpiration, guard cell, photometer, hypotonic, porometer, wall pressure, water potential, and root pressure.

It is the loss of water to the atmosphere, mainly through evaporation at leaf stomata.

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?

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 statements is not true for stomatal apparatus?

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