HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Sucrose, amino acids, minerals-actively by translocation
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Sucrose, carbonic acids, hormones-actively by transpiration
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Sucrose, amino acids, hormones-actively by translocation
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Sucrose, amino acids, hormones-passively by translocation
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Detailed explanation-1: -Transport of substances in the phloem is called translocation .
Detailed explanation-2: -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-3: -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.
Detailed explanation-4: -Translocation occurs in the phloem tissues, which consist of tube-like vessels called phloem vessels. These phloem vessels run from the leaves into every other part of the plant and are responsible for transporting dissolved organic solutes, such as sucrose and amino acids, from the sources to the sinks.