PLANT PHYSIOLOGY
TRANSPORT IN PLANT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It conducts material from root tips to leaves.
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The conducting cells are part of the apoplast.
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It transports mainly sugars and amino acids.
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No energy input is required for transport.
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Detailed explanation-1: -Here for the solution, answer is the statements that are incorrect about systems Are it conducts materials within dead cell, and another is it transport mainly sugars and amino acids. These are the incorrect statements, and are the answers not for the explanation.
Detailed explanation-2: -Xylem transports water and minerals, while phloem transports a variety of dissolved substances, including sugars and amino acids, throughout the plant. Water in the xylem always moves up, in the direction from the roots to the leaves. At the leaves, water evaporates.
Detailed explanation-3: -Amino acids are transported between different organs through both xylem and phloem. This redistribution of nitrogen and carbon requires the activity of amino acid transporters in the plasma membrane. In addition, amino acids can be taken up directly by the roots.
Detailed explanation-4: -Xylem is a complex permanent tissue. It is responsible for the upward conduction of water and minerals in plants. Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres. Xylem fibres are mainly supportive in function.
Detailed explanation-5: -Water and sugars are transported by xylem vessels and phloem tubes, respectively. Since these two conduits are hydraulically connected, it can be expected that both transport processes are physiologically coupled.