Question 4(b)Differentiate between the following pairs on the basis of what is mentioned within brackets: [5](i) Diffusion and Osmosis (Definition)(ii) RBC and WBC (Shape)(iii) Tubectomy and Vasectomy (Part cut and tied)(iv) Vasopressin and Insulin (Deficiency disorder)(v) Rods and Cones of Retina (Type of pigment).

Question

Accepted Answer

(i) Difference between Diffusion and Osmosis (Definition)

Diffusion	Osmosis
Diffusion is the free movement of molecules of a substance from the region of their higher concentration to the region of their lower concentration when the two are in a direct contact	Osmosis is the movement of water molecules from their region of higher concentration (dilute solution or with a lower solute concentration) to their region of lower concentration (concentrated solution or with a higher solute concentration) through a semi permeable membrane.

(ii) Difference between RBC and WBC (Shape)

RBC	WBC
RBCs are biconcave disc-like structures, flat in the centre and thick and rounded at the periphery.	WBCs have irregular amoeboid shape and can produce pseudopodia.

(iii) Difference between Tubectomy and Vasectomy (Part cut and tied)

Tubectomy	Vasectomy
Oviducts / Fallopian tubes	Sperm ducts/ Vas deferens

(iv) Difference between Vasopressin and Insulin (Deficiency disorder)

Vasopressin	Insulin
Diabetes insipidus	Diabetes mellitus

(v) Difference between Rods and Cones of Retina (Type of pigment).

Rods	Cones
Rhodopsin	Iodopsin

Solved 2015 Question Paper ICSE Class 10 Biology — Question 6

Question 4(b)