A) Retaining protoplasm at maturity
B) Having thick walls
C) Having wide lumen
D) Being meristematic
Correct Answer: A
Solution :
The cells of collenchyma contain protoplasm and are living without intercellular spaces. When sclerenchyma consist of thick-walled dead cells. In the beginning the cells are living and have protoplasm but due to deposition of impermeable secondary walls (lignin) they become dead, thick and hard.
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