Identify from the following, a plant tissue in which lignin does not occur in the cell walls?
Collenchyma
Sclerenchyma fibres
Sclereids
Xylem tracheae
Vessels are found in
Give differences: Collenchyma and Sclerenchyma
The chief water conducting elements of xylem in gymnosperms are
The commercial jute fibres are obtained from
Chloroplast containing parenchyma is called