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प्रश्न
Give the structure and function of the following:
Sclerenchyma
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उत्तर
Sclerenchyma
Structure - Cells of sclerenchyma are dead. These cells are elongated, narrow, pointed at both ends, thick-walled, and lignified. Their cell walls are thick due to the secondary deposition of lignin.
Function - Sclerenchyma gives strength, rigidity, and flexibility to the plant body, thereby enabling it to withstand various strains.
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संबंधित प्रश्न
What are simple tissues? Explain their three different types.
Draw a well labelled diagram of phloem.
What are tracheary elements? Describe their functions.
What is simple tissue? Classify and explain its different types with suitable diagram.
Define the following:
Permanent tissue
Differentiate between:
Collenchyma and Sclerenchyma
Write 'True or False' for the following statement:
A tracheid is longer than a vessel.
Differentiate between Xylem and Phloem functioning
Match the column (A) with the column (B)
| (A) | (B) | ||
| (a) | Parenchyma | (i) | Thin walled, packing cells |
| (b) | Photosynthesis | (ii) | Carbon fixation |
| (c) | Aerenchyma | (iii) | Localized thickenings |
| (d) | Collenchyma | (iv) | Buoyancy |
| (e) | Permanent tissue | (v) | Sclerenchyma |
Fibers are extensively longer ranging from 20 mm to 550 mm ______.
