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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It is green and hasn’t a nucleus
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The cells have thick cell walls
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There are empty spaces between the cells
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There is a title that says parenchyma in the photo
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Detailed explanation-1: -Sclerenchyma is made up of dead and fibrous cells. They have thickened cell walls as sclerenchyma tissue gives strength and rigidity to plant parts. The cell walls contain lignin.
Detailed explanation-2: -Sclerenchyma tissue possesses long, narrow cells with thickened walls. They possess secondary walls made of lignin. Lignin is a chemical substance, which acts as cement and hardens them.
Detailed explanation-3: -Sclerenchyma cells have thick, lignified secondary walls, lack cell contents at maturity, and occur throughout all plant tissues. These features make sclerenchyma tissues hard, rigid, and somewhat brittle. Sclerenchyma cells can occur as aggregates within ground tissue (sclereids or stone cells or as elongated fibers.
Detailed explanation-4: -Correct answer is option C: lignin.
Detailed explanation-5: -They are long and tapered at the end. They are the longest cells found in higher plants. They are often found in groups or clumps or patches. They are often dead at maturity and lack a nucleus and cytoplasm. They contain thick secondary walls with fewer pits than sclereids. More items