HORTICULTURE SCIENCE
PLANT BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mitosis, meiosis, differentiation,
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Lignification, gene expression, differentiation
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Mitosis, gene expression, differentiation
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Gene expression, lignification, meiosis
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Detailed explanation-1: -So, the correct answer is ‘Phellem →Phellogen → Phelloderm.
Detailed explanation-2: -Xylem formation begins when the actively dividing cells of growing root and shoot tips (apical meristems) give rise to primary xylem.
Detailed explanation-3: -Differences Between Xylem and Phloem Xylem tissues are the tubular-shaped structure, with the absence of cross walls. This tissue resembles the shape of a star. Phloem tissues are tubular-shaped, elongated, structures with the presence of walls with thin sieve tubes. It is located in the centre of the vascular bundle.
Detailed explanation-4: -Tracheids: Dead, tube-like cells with a tapering end. Vessels: They are present in angiosperms. Xylem Fibre: Dead cell with lignified walls and a central lumen. Xylem Parenchyma: Only living cells of xylem and store starch and fat.