1506: Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?
(a) Oceans, lakes, grasslands, mangroves
(b) Mangroves, oceans, grasslands, lakes
(c) Mangroves, grasslands, lakes, oceans
(d) Oceans, mangroves, lakes, grasslands
1507: Which one of the following is an artificial lake ?
(a) Kodaikanal (Tamil Nadu)
(b) Kolleru (Andhra Pradesh)
(c) N ainital (Uttarakhand)
(d) Renuka (Himachal Pradesh)
1508: Consider the following statements :
Ahadis were those troopers who
I. offered their services singly.
II. did not attach themselves to any chief.
III. had the emperor as their immediate colonel.
IV. attached themselves to Mirzas.
Of these statements :
(a) I, III and IV are correct
(b) I, II and III are correct
(c) II and III are correct
(d) I and IV are correct
1509: How did the dynasty of Nizam Shahis of Ahmadnagar come to an end?
(a) Ahmadnagar was annexed into Mughal empire and Husain Shah was consigned to life imprisonment.
(b) Mughal troops destroyed Daulatabad fort and killed Nizam-ul Mulk of Ahmadnagar.
(c) Fateh Khan usurped the throne from Nizam-ul Mulk.
(d) Malik Ambar was defeated in a battle with Mughals in 1631 and the entire royal family was killed by the Mughal troops.
1510: The minimum land area recommended for forest cover to maintain proper ecological balance in India is
(a) 25%
(b) 33%
(c) 43%
(d) 53%