PLANTS
TRANSPORT IN PLANTS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are made up of dead cells.
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They contain chloroplasts and nuclei.
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They are hydrophobic.
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Their walls are made of cellulose and lignin.
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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: -There are many parts of plant which do not contain nucleus: Sclerenchymatous cells get deposited by lignin and lose nucleus & cytoplasm at maturity. Xylem vessels consist of series of elongated dead cells for quick conduction of water and salts. Sieve tubes which also conduct food, don’t have nucleus in them.
Detailed explanation-3: -c) The xylem cells have chloroplasts, whereas the phloem cells do not have chloroplasts.
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.