Thick-walled and lignified cells with simple pits in their cellwalls , non- prosenchymatous and without living protoplasm ,usually isodiametric or irregular in shape are seen in
Parenchyma
Collenchyma
Fibres
Sclereids
A
Fibres
B
Sclereids
C
Parenchyma
D
Collenchyma
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Solution
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The correct option is D Sclereids Sclerenchymal cells are lignified and extremely thick walled. Hence the lumen of the cells is almost obliterated and may be spherical, oval, cylindrical, T-shaped and even Ste|late. They are generally found in hard parts of the plant. Their cell wall posses small pits or pores. Mature cells lack protoplast.
Hence the correct option is D.
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