1.

Match the items in Column I with that which is most appropriate in Column II. 

A. Pacemaker	(i) Associated with static body balance
B. Stroma	(ii) Stimulates production of milk by the mammary gland
C. Afferent nerve	(iii) Site of dark reaction
D. Afferent nerve	(iv) Transmits impulses from receptor organ to spinal cord
E. Sacculus	(v) SA node

Copy and complete the following by filling in the blanks 1 to 5 with appropriate
words/terms/phrases: 

To test the leaf for starch, it is boiled in water to .......... (1). It is next boiled in
methylated spirit to .......... (2). The leaf is placed in warm water to soften it It is then
placed in a dish and ........... (3) solution is added. The region which contains starch turns .............. ( 4 ), and the region which does not contain starch turns ............ (5).

Rewrite and complete the following sentences by inserting the correct word in the
space indicated:

......... is the phenomenon of contraction of the cytoplasm from the cell wall.

Rewrite and complete the following sentences by inserting the correct word in the
space indicated:

(ii) The blood vessel which begins and ends in capillaries is the ............ .

Rewrite and complete the following sentences by inserting the correct word in the
space indicated:

(iii) Wooden doors swell up in the rainy season due to ............ .

Rewrite and complete the following sentences by inserting the correct word in the

(iv) Phenotype is the observable characteristic which is ............ controlled.

Rewrite and complete the following sentences by inserting the correct word in the
space indicated:

(v) .............. vaccine is given to build up immunity against polio.

Study the following diagram carefully and answer the questions which follow:


(i) Name the celll.
(ii) What phenomenon is occurring in A?
(iii) Mention two structural differences between 1 and 2.
(iv) Name the process occurring in B and C and state the importance of this process in
the human body.

Name the following :

The mineral element essential for the clotting of blood.

Name the following :

The cells of the testes which produce the male hormones.