Question

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.

Answer 1

(a) Parenchyma and Collenchyma

Parenchyma	Collenchyma
(i) Consists of large thin-walled living cells with a single large vacuole (ii) Intercellular spaces may or may not be present	(i) Consists of elongated cells having thickening in the corner of the cell walls (ii) Intercellular spaces are totally absent

(b) Meristematic tissue and Permanent tissue

Meristematic tissue	Permanent tissue
(i) Have the capacity to divide (ii) Do not have intercellular spaces	(i) Have lost the capacity to divide (ii) Have large intercellular spaces

(c) Sclerenchyma and Parenchyma

Sclerenchyma	Parenchyma
(i) Consists of dead cells (ii) Have thick cell walls	(i) Consists of living cells (ii) Have thin cell walls

(d) Cells of involuntary muscle and voluntary muscle

Cells of involuntary muscle	Cells of voluntary muscle
(i) Small and spindle-shaped	(i) Long and cylindrical
(ii) Uninucleate	(ii) Multinucleate
(iii) Lack stripes or striations	(iii) Show stripes or striations
(iv) Found in the walls of the intestine and lining of blood vessels	(iv) Found in the arms, legs, face and neck

(e) Fibres of voluntary muscle and cardiac muscle

Fibres of voluntary muscle	Fibres of cardiac muscle
(i) Long and cylindrical	(i) Short and branched
(ii) Multinucleate	(ii) Uninucleate
(iii) Under the control of one’s own will or volition	(iii) Not under the control of one’s own will or volition
(iv) Found in the arms, legs, face and neck	(iv) Found in the heart