write the role of schlerenchyma tissue in plant ? class 9th
Answers
Answer:
Sclerenchyma: Sclerenchyma consists of
thick walled cells which are often lignified.
Sclerenchyma cells are dead and do not possess
living protoplasts at maturity. Sclerenchyma
cells are grouped into fibres and sclereids.
Fibres are elongated sclerenchymatous
cells, usually with pointed ends. Their walls are
lignified. Fibres are abundantly found in many
plants. The average length of fibres is 1 to 3 mm,
however in plants like Linum usitatissimnum
(flax), Cannabis sativa (hemp) and Corchorus
capsularis (jute), fibres are extensively longer,
ranging from 20 mm to 550 mm.
Sclereids are widely distributed in plant body.
They are usually broad, may occur in single or in
groups. Sclereids are isodiametric, with liginified
walls. Pits are prominent and seen along the walls.
Explanation:
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