PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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for downward translocation of organic nutrients to root cell.
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for upward translocation of minerals to stem tip.
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for providing support to the plant part.
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for providing water to the neighbouring cells.
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Detailed explanation-1: -phloem is the living tissue that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose, to parts of the plant where needed. This transport process is called translocation.
Detailed explanation-2: -These compounds are transported by the phloem tissue, which allows them to go both up and down within the plant, unlike sap which moves through the xylem. Phloem cells are tailored to perform certain functions: Sieve tubes lack a nucleus and are designed for transfer.
Detailed explanation-3: -The phloem carries food downward from the leaves to the roots. Xylem cells constitute the major part of a mature woody stem or root. They are stacked end to end in the center of the plant, forming a vertical column that conducts water and minerals absorbed by the roots upward through the stem to the leaves.
Detailed explanation-4: -Xylem and phloem are the two vascular tissues that are responsible for the transport of substances in plants. Phloem helps the bidirectional transport of food whereas xylem helps in the unidirectional transport of water.