1. Biome is:

(a) Sum of ecosystems in a geographical area
(b) Sum of ecosystems of all surface on earth
(c) Biotic component of an ecosystem
(d) Biotic potential of a limit population

2. The term tropopause indicate:

(a) Lower portion of atmosphere
(b) Upper portion of troposphere
(c) Middle part of troposphere
(d) Lower part of troposphere

3. What is the term that we can use for great barrier reef along east cost of Australia

(a) Biome
(b) Community of Sea herbs
(c) Population
(d) Ecosystem

4. Define the food chain from following statement.

(a) Number of human beings forming a chain for food
(b) Animals near a source of food
(c) Transfer of food energy from producer
(d) None of the above

5. Pyramid of energy in a pond ecosystem is always:

(a) Upright
(b) Inverted
(c) Both (a) and (b)
(d) None of these

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