State the main function of the following:

Sperm duct.

Write any two major reasons for the population explosion in India. 

Differentiate between the following pair on the basis of what is mentioned within bracket :

Disinfectant and Antiseptic (Definition) 

Briefly explain the following term:

innate immunity 

35.

Categorize the following activities as per the functions of the Red Cross Society and the WHO.

(1) To suggest quarantine measures to prevent spread of disease.

(2) Humanitarian services to victims of war

(3) To educate people in accident prevention

(4) To promote projects for research on disease.

State the main function of the following:

Eustachian tube

State the main function of the following:

Suspensory ligament of the eye

State the main function of the following:

Lenticels 

Given below are six sets with four terms each. In each set one term is odd and cannot be grouped in the same category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong. The first one has been done as an example.

Example: Calyx, Corolla, Stamens, Midrib

Odd term: midrib

i. Haemoglobin, Glucagon, Iodopsin, Rhodopsin

Category: Parts of a flower

Given below are six sets with four terms each. In each set one term is odd and cannot be grouped in the same category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong. The first one has been done as an example.

Example: Calyx, Corolla, Stamens, Midrib

Odd term: midrib

Category: Parts of a flower

(ii) Urethra, Uterus, Urinary bladder, Ureter