MCQs on People and Environment
(UGC NET Paper 1)
People and Environment MCQs
1. The part of the earth and its atmosphere in which organisms live is the :
(a) Biosphere
(b) Biomass
(c) Biota
(d) Biome
Ans. a
2.Which of the following conceptual sphere of the environment has the least storage capacity of matter?
(a) Lithosphere
(b) Atmosphere
(c) Biosphere
(d) Hydrosphere
Ans. b
3. Which one of the following is an abiotic component of the ecosystem?
(a) Plants
(b) Fungi
(c) Humus
(d) Bacteria
Ans. c
4. The most stable ecosystem is :
(a) Mountain
(b) Desert
(c) Forest
(d) Ocean
Ans. d
5. Increase in fauna and decrease in flora would be harmful due to increase in :
(a) Co2
(b) O2
(c) N2
(d) So2
Ans. a
6.The largest reservoir of nitrogen in our planet is the
(a) Fossil fuel
(b) Atmosphere
(c) Biosphere
(d) Ocean
Ans. b
7. Pollution is
(a) release of undesirable/toxic sub- stances in the environment
(b) removal of top soil
(c) conservation of energy
(d) all of these
Ans. a
8. Spoiling of biotic and abiotic environment by physical/chemical factors is termed as
(a) contamination
(b) adulteration
(c) pollution
(d) noosphere
Ans. c
9. A normal component of environment which becomes pollutant when itS concentration crosses a threshold value is called :
(a) Quantitative Pollutant
(b) Qualitative Pollutant
(c) Degradable Pollutant
(d) Physical Pollutant
Ans. a
10. Pollution can bring about change in
(a) biogeochemical cycling
(b) abiotic environment
(c) biotic environment
(d) all of the above
Ans. d
11. Loss of relative biological equilibrium is due to
(a) low temperature
(b) high temperature
(c) radiation
(d) pollution
Ans. d
12.Environment is a subject that encompasses :
(a) All branches of science only.
(b) Only social science.
(c) Branches of science and social science.
(d) All branches of sciences, arts and social.
Ans. d
13. The unlimited exploitation of nature by human being resulted in
(a) Environmental pollution
(b) Health problem
(c) Decrease in biodiversity
(d) All of the above
Ans. d
14.The importance of environment
(a) Was only recognized in recent years.
(b) Was recognized in ancient time.
(c) Was not recognized in ancient time
(d) None of these
Ans. b
15. The conservation of natural resources :
(a) Was not enough in ancient India.
(b) Was encouraged in ancient India.
(c) Is recently being used in India.
(d) None of these.
Ans. b
16. Life on earth constantly interacts with its surroundings called environments which essentially consists of :
(a) Biotic components only.
(b) Only abiotic components.
(c) Both biotic and abiotic components.
(d) None of these
Ans. c
17. The conservation of environment requires :
(a) Maintenance of biodiversity
(b) Maintenance of gaseous and material cycles
(c) Maintenance of ecological order and natural balance.
(d) All of these.
Ans. d
18. Biosphere is made up of:
(a) Atmosphere and lithosphere
(b) Hydrosphere and atmosphere
(c) Lithosphere and hydrosphere
(d) Lithosphere, hydrosphere and atmosphere
Ans. d
19. Pollution can be
(a) natural
(b) manmade
(c) both (1) and (2)
(d) none of these
Ans. c
20. Qualitative pollutants are :
(a) Added by man
(b) Naturally occurring
(c) Present in the High concentration
(d) None of these
Ans. a
