Question asked by Filo student

We know that more water evaporates when the weather is hot. In such a situation, the stomata begin to close. This lessens the amount of water that evaporates from the leaves. Fig-4: Stomata in the leaf We learned in the chapter 'Nutrition in Plants' of class VII that plants absorb carbon dioxide. The carbon dioxide also enters the leaves through the stomata. - When the weather is hot and the stomata close, what effect would this have on the absorption of carbon dioxide by the plant? - What effect would a change in the amount of carbon dioxide absorbed have on the growth of the plant? - If the plant does not get water at this time, what effect would this have on its growth? Discuss in your class and find out reasons. Plants cannot absorb nutrients directly from soil. Only the nutrient that dissolves in water is absorbed by the roots of the plant. We discussed about transportation of substances in the chapter, "Transportation through plasma membrane" and in the chapter "Plant Cell". Try to think of how xylem and phloem are useful in transportation. - Water is essential for Agriculture.

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Updated on: Dec 27, 2022