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

Cells of this tissue are living and show angular wall thickening. They also provide mechanical support. The tissue is

(a) xylem

(b) sclerenchyma

(c) collenchyma

(d) epidermis

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.