PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Storing molecules transported by the phloem
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Regulating the volume transported by the phloem
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Extracting molecules from the phloem for glycogen production
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Moral support for the phloem
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Detailed explanation-1: -Sugars produced in sources, such as leaves, need to be delivered to growing parts of the plant via the phloem in a process called translocation, or movement of sugar. The points of sugar delivery, such as roots, young shoots, and developing seeds, are called sinks.
Detailed explanation-2: -The phloem acts as the source and all the plant tissue acts as a sink that receives the food material.
Detailed explanation-3: -The source in the plant is responsible for synthesising the sugars required for plant growth. The sinks in the plants use the sugars for immediate use and store the rest for future metabolic needs. The leaves act as a source when photosynthesising.
Detailed explanation-4: -Sink cells are any cells that unload sucrose from the phloem. Sink cells are found throughout the plant, but are abundant in roots or developing fruits and shoot tips. Sink cells typically cannot meet their own needs for carbohydrates and must import them from the phloem.