PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sucrose and amino acids can travel up the stem in the phloem.
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Sucrose and amino acids can travel down the stem in the phloem.
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Sucrose and amino acids can travel up or down the stem in the phloem.
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Sucrose and amino acids can travel up or down the stem in the xylem
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Detailed explanation-1: -The cells that make up the phloem are adapted to their function: Sieve tubes-specialised for transport and have no nuclei . Each sieve tube has a perforated end so its cytoplasm connects one cell to the next. Sucrose and amino acids are translocated within the living cytoplasm of the sieve tubes.
Detailed explanation-2: -Sucrose, RFOs and polyols are transported in the sieve tubes to the sink organs in the transport phloem.
Detailed explanation-3: -Translocation is the transport of sucrose, amino acids, nutrients, etc., from the source to the sink within a plant. Translocation in the phloem refers to the flow of different chemicals through the tissue of a plant, such as amino acids, sucrose, etc.
Detailed explanation-4: -Material like sucrose is transferred into phloem tissue using energy from ATP. This increases the osmotic pressure of the tissue causing water to move into it. This pressure moves the material in the phloem to tissues which have less pressure. This allows the phloem to move material according to the plant’s needs.