PLANTS
TRANSPORT IN PLANTS
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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: -Phloem translocates water and products of photosynthesis from source tissues to the sink regions where they are utilized or stored. Primary phloem originates from the procambial regions in meristems, while secondary phloem originates from the vascular cambium. Phloem contains specialized cell types.
Detailed explanation-3: -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.
Detailed explanation-4: -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.