41.

With reference to the human ear, answer the following questions:

(iii) Name the part of the ear associated with (1) static balance, (2) hearing and (3)

dynamic balance.

With reference to the human ear, answer the following questions:

(iv)Name the nerve which transmits messages from the ear to the brain.

Name an accessory gland found in the male reproductive system and state the function of its secretion.

Write the difference between the following pairs by following the indications in the brackets:

(i) Antiseptic and disinfectant (an example for each)

Write the difference between the following pairs by following the indications in the

brackets:

(ii) Erythrocytes and leucocytes (function)

Write the difference between the following pairs by following the indications in the

brackets:

(iii)Guttation and bleeding in plants (cause)

Write the difference between the following pairs by following the indications in the

brackets:

(iv)NADP and AIDS (expand the abbreviation)

Write the difference between the following pairs by following the indications in the

brackets:

Monohybrid and dihybrid cross (phenotypic ratio)

Study the diagram given below and answer the following questions:  



(i) Name the region in the kidney where this structure is present
(ii) Name the parts labelled 1, 2, 3 and 4.
(iii) Name the stages involved in the formation of urine.
(iv)What is the technical term given to the process occurring in 2 and 3? Briefly describe the process. 

Study the diagram given below and answer the following questions:



(i) Name the pancreatic cells which produce (1) glucagon and (2) insulin.
(ii) State the main function of (1) glucagon and (2) insulin.
(iii) Why is the pancreas referred to as an exo-endocrine gland?
(iv) Why is insulin not given orally but is injected into the body
(v) What is the technical term for the cells of the pancreas which produce endocrine hormones? 
(vi) Where in the body is the pancreas located?