MCQ PART I-ECOLOGY AND ENVIRONMENT

1. Synecology deals with
A. ecology of many species 
B. ecology of many populations 
C. ecology of community 
D. none of the above

2. Ecotype is a type of species in which environmentally induced variations are
A. temporary 
B. Genetically xed 
C. genetically not related 
D. none of the above

3. The term \Biocoenosis" was proposed by
A. Transley 
B. Karl Mobius 
C. Warming
D. none of the above

4. Energy flow in an ecosystem is
A. unidirectional 
B. Bidirectional 
C. Multidirectional 
D. Cyclic

5. Flow of materials in an ecosystem is
A. unidirectional 
B. Bidirectional 
C. Multidirectional 
D. Cyclic

6. Trophic levels are formed by
A. only plants 
B. only animals 
C. only carnivorous 
D. organisms linked in food-chain

7. Biotic potential is counteracted by
A. Competition with other organisms 
B. Producer is the largest 
C. Limitation of food supply
D. None of the above

8. De nition of ecosystem is
A. The community of organisms together with the environment in which they live 
B. The abiotic component of a habitat 
C. The part of the earth and its atmosphere which inhibits living organisms 
D. A community of organisms interacting with one another

9. In a food chain of grassland ecosystem the top consumers are-
A. Herbivorous 
B. Carnivorous 
C. Bacteria
D. Either carnivorous or herbivorous.

10. Species that occur in di erent geographical regions separated by special barrier are:
A. Allopatric 
B. Sympatric 
C. Sibling
D. None of the above.

11. Which of the following statement is true about theEcotone?
A. It is meeting place of two di erent eco-systems
B. It is meeting place of two same eco-systems
C. Density of species is very low here 
D. All of the above.

12. Consider the following statements about the estuary:
1. Estuary is place where the river fresh waster meets with ocean water
2. This area is highly productive
3. This area is highly unproductive
4. All of the above

Which of above the statements is/are true?
A. 1 only B. 2 only C. 1 and 2 D. 3 only

13. Which of following statement is incorrect about the Biosphere?
A. Biosphere is combination of lithosphere, hydrosphere and Atmosphere 
B. Biosphere is missing at extreme of north and south pole 
C. Organisms are uniformly present in Biosphere 
D. All of the above

14. In an ecotone, the species which become abundant are called:
A. Edge species 
B. Keystone species 
C. Endemic species 
D. Foster species

15. The pyramid of energy in terrestrial ecosystem is
A. upright 
B. inverted 
C. spindle shaped
D. none of these

16. The pyramid of numbers is inverted in the case of
A. parasitic food chain 
B. forest land ecosystem
C. grassland ecosystem 
D. lake ecosystem

17. Which of the following ecological pyramid is always upright?
A. pyramid of energy 
B. pyramid of number

C. pyramid of biomass 
D. none of these