In the autumn season, the callus pads appear | vedclass

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(C) In the autumn season, the activity of the cambium is reduced, and the sieve tubes become inactive. During this period, a carbohydrate substance kn

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Sieve plates

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(C) In the autumn season, the activity of the cambium is reduced, and the sieve tubes become inactive. During this period, a carbohydrate substance known as $Callose$ is deposited on the $Sieve plates$ of the sieve tubes. This deposition forms a layer called the callus pad, which blocks the pores of the sieve plates, thereby preventing the transport of food materials.

In the autumn season, the callus pads appear on

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