1. Which of the following is not a characteristic of the tropical rain forest Biome?

(a)  About 200 cm of precipitation
(b)  Canopy of full evergreen trees
(c)  Climbing linans
(d) Permafrost

2.  Which of the following eco system has highest rate of gross primary production?

(a)  Coral reefs
(b)  Mangroves
(c)  Grasslands         
(d)  Educational forest

3.  In any food chain the largest population is that of

(a)  Primary consumers
(b)  Tertiary consumers
(c)  Producers           
(d)  Decomposers

4.  The circulation of elements in an ecosystem is known as

(a)  Geological cycling
(b)  Geo-chemical cycling
(c)  Biogeochemical cycling
(d) Nutrient cycling

5.  Atmosphere consists of

(a)  Lithosphere + Hydrosphere
(b)  Lithosphere + Stratosphere + Hydrosphere
(c)  Troposphere + Stratosphere + Ionosphere
(d) None of the above.

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ANS: 1(a), 2(b), 3(c), 4(c), 5(a)