BIO NMDCAT CELL STRUCTURE & FUNCTION

nmdcat.online July 3, 2026

39. The specific cell wall layer that is deposited exclusively on the inner surface of the primary wall after a plant cell has fully ceased expansion is the

A. Middle lamella

B. Secondary cell wall

✓

C. Glycocalyx shell

D. Extracellular capsule

📝 Explanation

The secondary wall is thick and contains dense cellulose and lignin, providing structural reinforcement to mature, non-growing plant tissues.

📖 Additional Information

Middle lamella
Secondary cell wall
Glycocalyx shell
Extracellular capsule

The secondary wall is thick and contains dense cellulose and lignin, providing structural reinforcement to mature, non-growing plant tissues.

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