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Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, in
- a)retaining the protoplasm at maturity
- b)having uniformly thickened wall
- c)having dead cells
- d)both (a) and (d)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Both collenchyma and sclerenchyma give mechanical strength to plants; ...
Collenchyma tissue is composed of elongated cells with irregularly thickened walls. They provide structural support and flexibility to the growing stems.
Sclerenchyma is the supporting tissue in plants. It is composed of dead cells which is completely devoid of protoplasm.
Therefore, the correct answer is option A.
This question is part of UPSC exam. View all Class 9 courses
Most Upvoted Answer
Both collenchyma and sclerenchyma give mechanical strength to plants; ...
Answer:
Introduction:
Both collenchyma and sclerenchyma are types of plant tissues that provide mechanical support to plants. While they have some similarities in their function, they also have distinct differences.
Similarities between collenchyma and sclerenchyma:
- Both collenchyma and sclerenchyma provide mechanical strength to plants.
- Both tissues are made up of cells that have thickened cell walls.
Differences between collenchyma and sclerenchyma:
1. Retaining the protoplasm at maturity:
- Collenchyma cells retain their protoplasm at maturity, meaning they have living cytoplasm.
- Sclerenchyma cells, on the other hand, lose their protoplasm and become dead cells at maturity.
2. Wall thickness:
- Collenchyma cells have irregularly thickened cell walls. The thickening is localized at the corners of the cells, providing flexibility and support.
- Sclerenchyma cells have uniformly thickened cell walls. These walls are made up of a substance called lignin, which makes them rigid and provides strong mechanical support.
3. Cell type at maturity:
- Collenchyma cells are living cells at maturity.
- Sclerenchyma cells are dead cells at maturity.
Conclusion:
In conclusion, collenchyma and sclerenchyma both provide mechanical strength to plants, but they differ in terms of retaining protoplasm at maturity, wall thickness, and cell type at maturity. Collenchyma cells retain their protoplasm, have irregularly thickened walls, and remain living at maturity, while sclerenchyma cells lose their protoplasm, have uniformly thickened walls, and become dead at maturity. Therefore, the correct answer is option 'D', which includes both options 'a' and 'd'.
Introduction:
Both collenchyma and sclerenchyma are types of plant tissues that provide mechanical support to plants. While they have some similarities in their function, they also have distinct differences.
Similarities between collenchyma and sclerenchyma:
- Both collenchyma and sclerenchyma provide mechanical strength to plants.
- Both tissues are made up of cells that have thickened cell walls.
Differences between collenchyma and sclerenchyma:
1. Retaining the protoplasm at maturity:
- Collenchyma cells retain their protoplasm at maturity, meaning they have living cytoplasm.
- Sclerenchyma cells, on the other hand, lose their protoplasm and become dead cells at maturity.
2. Wall thickness:
- Collenchyma cells have irregularly thickened cell walls. The thickening is localized at the corners of the cells, providing flexibility and support.
- Sclerenchyma cells have uniformly thickened cell walls. These walls are made up of a substance called lignin, which makes them rigid and provides strong mechanical support.
3. Cell type at maturity:
- Collenchyma cells are living cells at maturity.
- Sclerenchyma cells are dead cells at maturity.
Conclusion:
In conclusion, collenchyma and sclerenchyma both provide mechanical strength to plants, but they differ in terms of retaining protoplasm at maturity, wall thickness, and cell type at maturity. Collenchyma cells retain their protoplasm, have irregularly thickened walls, and remain living at maturity, while sclerenchyma cells lose their protoplasm, have uniformly thickened walls, and become dead at maturity. Therefore, the correct answer is option 'D', which includes both options 'a' and 'd'.
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Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer?
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Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer?.
Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Both collenchyma and sclerenchyma give mechanical strength to plants; but the former differs from the latter, ina)retaining the protoplasm at maturityb)having uniformly thickened wallc)having dead cellsd)both(a) and (d)Correct answer is option 'D'. Can you explain this answer?.
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