HORTICULTURE SCIENCE
ULTRA STRUCTURE OF PLANT CELLS AND ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is similar in structure to parenchyma cells except they have thicker primary walls that are capable of giving exceptional strength to young actively growing organs of a plant?
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Meristems
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Permanent tissues
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Sclerenchyma cells
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Collenchyma cells
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Explanation:
Detailed explanation-1: -Like parenchyma cells, collenchyma is living at maturity. Collenchyma cells have thick primary walls composed of cellulose.
Detailed explanation-2: -Collenchyma is a supporting tissue composed of more or less elongated living cells with unevenly thickened, nonlignified primary walls. It is in regions of primary growth in stems and leaves.
Detailed explanation-3: -Structure of Parenchyma Cells: Parenchyma in plant cells is either polyhedral or isodiametric in shape. They can also be oval, polygonal, elongated, or round. Such cells are packed tightly or may have limited intercellular space. They are built up of a thin cell wall that is mainly composed of cellulose, hemicellulose.
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