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Ganong's Potometer.

Match the ter...

Question

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.

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Solution

Transpiration is the process through which plants loose water to atmosphere through evaporation at leaf stoma.

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Q. Assertion : Transpiration occurs through stomata

Reason : Guttation is due to root pressure

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?

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:

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. Match and find the correct combination :

	LIST I		LIST II
A.	Scotoactive stomata	1.	Opening and closing of photo active stomata
B.	Guttation	2.	Transpiration
C.	Tensile strength	3.	Water loss in liquid phase
D.	K $^{+}$ pump theory	4.	Night transpiration
		5.	Antitranspirant

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