PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Phloem parenchyma has dense cytoplasm and a nucleus. Sieve tubes have peripheral cytoplasm and large vacuole but lack a nucleus. Phloem companion cells are parenchymatous and these have a nucleus. These are also the living cells of phloem.
Detailed explanation-2: -Companion cells – transport of substances in the phloem requires energy. One or more companion cells attached to each sieve tube provide this energy. A sieve tube is completely dependent on its companion cell(s).
Detailed explanation-3: -Found in the phloem cells of a plant are companion cells. Companion cells are a type of parenchyma cell.
Detailed explanation-4: -Detailed Solution. The correct answer is Phloem transports photosynthetic products. Phloem is a living tissue in vascular plants that conducts the soluble organic compounds synthesized downwards from the leaves during photosynthesis.