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 type of plant cell has a thick primary cell wall and no secondary cell wall? Hint:It is used to support the growing parts of the plant.
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parenchyma
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collenchyma
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schlerenchyma
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guard cells
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Explanation:
Detailed explanation-1: -Collenchyma, like parenchyma, lack secondary cell walls but have thicker primary cells walls than parenchyma. They are long and thin cells that retain the ability to stretch and elongate; this feature helps them provide structural support in growing regions of the shoot system.
Detailed explanation-2: -Collenchyma cells are elongated cells with irregularly thick cell walls that provide support and structure. Their thick cell walls are composed of the compounds cellulose and pectin.
Detailed explanation-3: -SCLERENCHYMA. Sclerenchyma cells have thick, lignified secondary walls, lack cell contents at maturity, and occur throughout all plant tissues.
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