Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Biology Cell

In a plant, ______ is present in the middle lamella, primary cell and secondary walls and accumulates in the initial stages of development during cell expansion.

1

chitin

2

pectin

3

alginate

4

More than one of the above

5

None of the above

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