Tissues are the group of cells that perform a particular function. Phloem is a type of permanent tissue.
Phloem too is a complex tissue made up of four types of cells, or elements— sieve tubes, companion cells, phloem fibres and phloem parenchyma. It is not necessary for the phloem to contain all four types of cells. Phloem cells are living cells (except phloem fibres) which help transport food from leaves to the storage organs and growing regions of the plant.
Which of the following are correct ? (a) Tissues are the group of cells that perform a particular function. (b) Phloem Fibres are dead sclerenchyma cells. All plants do not have them. | |||
Right Option : C | |||
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Which of the following are correct ? (a) Phloem is a type of permanent tissue. (b) Sieve tube and companion cells are present in xylem . (c) Phloem parenchyma cells also form a part of the phloem. When present, they store food and help to conduct it. | |||
Right Option : C | |||
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Phloem fibres are dead _____________________ cells. | |||
Right Option : A | |||
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