Differentiate between the following pairs on the basis of what is mentioned within brackets:

Sperm duct and fallopian tube (function)

Given below is the outline of the human body showing the important glands:

(i) Name the glands marked 1 to 4.

(ii) Name the hormone secreted by part 2. Give one important function of this hormone.

(iii) Name the endocrine part of the part numbered 3.

(iv) Why is the part labelled 1 called the master gland? Which part of the forebrain controls the gland labelled 1?

(v) Name the gland that secretes the 'emergency hormone'.

Differentiate between the following pairs on the basis of what is mentioned within brackets:

Red Cross and WHO (one activity)

Differentiate between the following pairs on the basis of what is mentioned within brackets:

LUBB and DUP (names of the valves whose closure produce the sound)