$I.$ Found only in sporophytic phase of life cycle
$II.$ May contain enzymes that are biologically active
$III.$ Often contain strengthening polymers
Select the correct option for cell wall
All are correct except $I$
All are correct except $II$
All are correct except $III$
All are correct
Wilting of plants takes place when one of the following takes place
Articulated laticifers or latex vessels are prominent in
$A$ : Complementary cells are cut-off by phellogen towards outside.
$R$ : Phellogen is partially secondary in origin.
Rind of Citrus fruit possesses