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प्रश्न
Write a short note on sclerenchyma.
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उत्तर
Sclerenchyma cells are dead cells devoid of protoplasm. Its cell walls are thick and lignified. There are no intercellular spaces between the cells. Middle lamella exists between two sclerenchymatous cells. They are found in stems, roots, veins of leaves, hard covering of seeds, and nuts. Cells of collenchyma are of two types:
(a) fibres and
(b) sclereids (grit cells or stone cells).
The main function of sclerenchyma is to provide mechanical support and protection to the plant.
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संबंधित प्रश्न
What are the functions of the stomata?
Identify the type of tissue in the vascular bundle.
Name the regions in which parenchyma tissue is present.
Draw a well-labelled diagram of phloem.
Give two functions of collenchyma.
Parenchyma containing chloroplasts is known as :
Name the tissue associated with the following:
Movement of food in the plant body
Write 'True or False' for the following statement:
A tracheid is longer than a vessel.
The question has four answers. Choose the correct answer:
The parenchymatous tissue is
Match the followings and choose the correct option from below
| Column I | Column II |
| A. Meristem | i. Photosynthesis, storage |
| B. Parenchyma | ii. Mechanical support |
| C. Collenchyma | iii. Actively dividing cells |
| D. Sclerenchyma | iv. Stomata |
| E. Epidermal tissue | v. Sclereids |
