Sclerenchyma
Sclerenchyma
Tissues are the group of cells that perform a particular function. In plants there are present two type of tissues : Meristametic tissues and permanent tissues. Sclerenchyma is a type of simple permanent tissue.
Sclerenchyma:
The tissue is composed of long, narrow cells whose walls are evenly thickened with lignin. Lignin is a chemical that acts like cement, sticking fibres and hardening them. Sclerenchyma cells are dead. They are packed together closely and provide strength and flexibility to plant parts.
They are present in stems, veins of leaves, the hard covering of seeds and nuts, and the husk of coconut.
Which of the following are correct ? (a) The tissue is composed of long, narrow cells whose walls are evenly thickened with lignin. (b) Sclerenchyma consists of dead cells at maturity . | |||
| Right Option : C | |||
| View Explanation | |||
___________________ consists of dead cells at maturity.
| |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct ? (a) Meristametic tissues and permanent tissues are present in collenchyma . (b) Sclrenchyma are packed together closely and provide strength and flexibility to plant parts. (c) Sclrenchyma are present in stems, veins of leaves, the hard covering of seeds and nuts, and the husk of coconut . | |||
| Right Option : B | |||
| View Explanation | |||
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