Hardness of seed coats is due to the presence of
sclerenchyma fibres
stone cells
collenchyma
bast
The hardness and strength of the seed coat is due to the presence of abundant brachysclereids or stone cells.
Differentiate between cells of : (a) Parenchyma and collenchyma (b) Meristematic tissue and permanent tissue (c) Sclerenchyma and parenchyma (d) Cells of involuntary and voluntary muscle (e) Fibres of voluntary muscle and cardiac muscle.
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents
(a) collenchyma
(b) sclerenchyma
(c) xylem
(d) meristem