11.

How does vegetation vary according to the altitude in the mountain forests ?

12.

Cities	T/R	J	F	M	A	M	J	J	A	S	O	N	D
A	T	24	24	26	28	30	29	27	27	27	28	27	25
	R	4	2	2	2	18	465	613	329	286	65	18	2
B	T	25	26	28	31	33	33	31	31	30	28	26	25
	R	4	13	13	18	38	45	87	113	119	306	350	135

(T = Mean monthly Temperature in  C; R = Average monthly Rainfall in millimetres )

i. Account for the difference in the rainfall regimes of the two cities .

ii. Why is the temperature lower during the months of July  - September for city A and December - January for city B ?

iii. Mention three differences between the tropical evergreen forest and the tropical deciduous forests.

13.

i. Why is 1921 considered to be a special year in the democratic history of India ?

ii. Compare the population growth rates of India and China in the last decade. What is the implication of this difference ?

14.

i. What is migration ?

ii. Mention two differences between rural and urban settlements.

15.

i. What is a metropolis ?

ii. Discuss six problems of urbanization of Kolkata.

16.

i. Give three reasons to explain why irrigation is necessary in India. 

ii. Explain why tube - wells are a popular form of irigation for the farmers of the northern plains. 

17.

i. Compare India and China with respect to:

1. the availability of arable land

2. the quality of cultivable land 

ii. Explain the causes that determine availability of arable land in China. 

18.

i. What is the differences between wet and dry farming ?

ii. Name a wet crop and a dry crop.

19.

How does rice cultivation differ in India and Japan with respect to the methods of cultivation and areas of growth ?

20.

i. What is difference between fish preservation and fish conservation ?

ii. What measures are being undertaken for the development of fishing in India ?