......... and ......... may be reversed depen | vedclass

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(A) In the process of phloem translocation,the direction of movement of food (sucrose) is from the source to the sink. The source is defined as the pa

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Source,sink

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(A) In the process of phloem translocation,the direction of movement of food (sucrose) is from the source to the sink. The source is defined as the part of the plant that synthesizes food (e.g.,leaves),while the sink is the part that needs or stores food (e.g.,roots,fruits,or developing buds). However,this relationship is not fixed. Depending on the season or the physiological needs of the plant,the roles can be reversed. For example,in early spring,the roots act as a source by mobilizing stored sugars to support the growth of new buds,while the buds act as the sink. Therefore,the roles of source and sink are dynamic and reversible.

......... and ......... may be reversed depending on the season or the plant's need.

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