1.

Match the items given in Column A with the most appropriate ones in Column B and rewrite the correct matching pairs from Column A and Column B:

A. Pituitary gland	(i) Testosterone
B. Sulphur dioxide	(ii) Calcium
C. Seminiferous tubules	(iii) Growth hormone
D. Seminiferous tubules	(iv) Acid rain
E. Guttation	(v) Sperms

Copy and complete the following by filling in the blanks 1 to 5 with appropriate words.

The human female gonads are ovaries. A maturing egg in the ovary is present in a sac of cells called ………(1) As the eggs grow lrger, the follicle enlarges and gets filled with a fluid and is now called the ………. (2) follicle. The process of releasing the egg from the ovary is called …… (3) The ovum is picked up by the oviducal funnel and fertilisation takes place in the …. (4) In about a week the blastocyst gets fixed in the endometrium of the uterus and this process is called ……….(5)

Name the following :

The process of conversion of ADP into ATP during photosynthesis. 

Name the following

The part of the brain associated with memory. 

Name the following

ii. The ear ossicle which is attached to the tympanum 

Name the disease for which the following types of vaccines are given :

(1) Salk’s vaccine.

(2) B.C.G

Name the following:

The type of gene which is not expressed in the presence of a contrasting allele.

Name the following

The hormone secreted by islets of Langerhans.

Give one example of each of the following:

i. A water pollutant

Give one example of each of the following:

An aquatic plant used in the laboratory to demonstrate 0₂ liberation during Photosynthesis