Grass leaves curl inwards during very dr...

Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following:

Closure of stomata

Flaccidity of bulliform cells

Shrinkage of air spaces in spongy meso- phyll

Tyloses in vessels

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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 the following options.

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TRUEMAN BIOLOGY-NEET (UG) -2019 (Conducted by CBSE on 05-05-2019)-MCQs

The Earth Summit held in Rio de Janeiro in 1992 was called :
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DNA precipitation out of a mixture of biomolecules can be achieved by ...
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Grass leaves curl inwards during very dry weather. Select the most app...
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Match the following structures with the their respective location in o...
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Match the following hormones with the respective disease
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Which of the following contraceptive methods Involve a role of horrnon...
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Drug called 'Heroin' is synthesized by
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In a species, the weight of newborn ranges form 2 to 5 kg. 97% of the ...
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Conversion of glucose to glucose-6-phosphate, the first irreversible r...
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Which of the following statements is correct?
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Which of the following' ecological pyramids is generally inverted?
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Consider the following statements: (A) Coenzyme or metal ion that i...
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Due to increasing air-borne allergens a pollutants, many people in urb...
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Which one of the following statements regarding post-fertilization de...
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Phloem in gymnosperms lacks :
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It takes very long time for pineapple plants to produce flowers. Which...
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Persistent nucellus in the seed is known as
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Cells in G0 phase :
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Match Column -I with Column -II
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What would be the heart rate of a person if the cardiac output is 5 L,...
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