The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions: 
 

i. Label parts 1, 2, 3 and 4.

ii. State the reason for the high hydrostatic pressure in the glomerulus.

iii Name the blood vessel which contains the least amount of urea in this diagram.

iv. Name the two main stages of urine formation.

v. Name the part of the nephron which lies in the renal medulla. 

Name the following:

Knot-like mass of blood capillaries inside the Bowman's capsule.

Match the items in Column A with that which is most appropriate in Column B. Rewrite the matching pair. 

Given below is an example of certain structures and their special functional activities.

For example: Eye and vision.

On a similar pattern, complete the following:

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

(v) Bowman's capsule and Malpighian capsule (parts included)

Give biological reasons for the following:

The renal cortex has a dotted appearance.

Mention the exact location of the following structures:

v. Loop of Henle

Draw neat and labelled diagrams of the following:

i. Malpighian Capsule

 The diagram given below shows the male urinogenital system of a human being. Study the diagram and answer the questions that follow:

i. Label the parts numbered 1 to 8.

ii. Name the corresponding structure of part (4) in female reproductive system.

iii. What is the role of part 7? [5]

Explain the following terms:

Selective reabsorption.

Name the following :

The structural and functional unit of the kidney.