Three layers of Cell Wall

Question 1

where pectin cements adjacent cells together

Answer 1

Middle lamella

Question 2

thin, not rigid, stretched as the cell grows, layer formed before and during growth of the plant cell, consists of cellulose microfibril, have primary pit fields, thin areas that transversed by numerous protoplasmic strands called plasmodesmata.

Answer 2

Primary wall

Question 3

rigid, thick, fromed after cell completes growth.

Answer 3

Secondary wall