Q.

Assertion (A) : Middle lamella is like cementing material between two adjacent plant cells.
Reason (R) : Plasmodesmata traverse cell wall and middle lamellae

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a

Both A and R are correct and R is the correct explanation of A

b

A is correct but R is incorrect

c

R is correct but A is incorrect

d

Both A and R are correct but R is not the correct explanation of A

answer is B.

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Detailed Solution

NCERT XI PAGE 132.

The middle lamella is a layer mainly of calcium pectate which holds or glues the different neighbouring cells together. The cell wall and middle lamellae may be traversed by plasmodesmata which connect the cytoplasm of neighbouring cells.

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