a
Collenchyma and xylem cells
b
Vascular cambium
c
Cork cambium and sclerenchyma
d
Vascular cambium and cork cambium
Explanation
Correct Option
dNo explanation available
Video Explanation
Post your Contribution
Share:
Discussions (6)
Mcdangenius
5 years ago
The growth of the lateral meristems, which includes the vascular cambium and the cork cambium (in woody plants), increases the thickness of the stem during secondary growth.
brigelina
7 years ago
I disagree with your answer myschool, the answer is A, the walls of xylem cells are thickened with a hard, strong material called lignin which aids in secondary thickening of a plant and collenchyma is a modified form of parenchyma with extra cellulose deposited at the corners of the cells which provides extra strength.
