1. Biotic environment includes
(a) producers (b) consumers
(c) decomposers (d) all the above
Answer: (d) all the above
2. Decomposers include
(a) bacteria (b) fungi
(c) both (d) animals
Answer: (c) both
3. Abiotic environment does not include
(a) air (b) water
(c) soil (d) plants
Answer: (d) plants
4. Vermicomposting is done by
(a) fungus (b) bacteria
(c) worms (d) animals
Answer: (c) worms
5. The group of organisms which convert light into food are called
(a) autotrophs (b) heterotrophs
(c) decomposers (d) omnivores
Answer: (a) Autotrophs
6. Which one the following is not biodegradable?
(a) vegetables (b) fruits
(c) earthworm (d) aluminium foil
Answer: (d) Aluminium Foil
7. Animal(s) which is/are active at night.
(a) owl (b) rat
(c) cockroach (d) all the above
Answer: (d) All the above
8. An animal that can tolerate the heat of the desert is
(a) rats (b) camel
(c) cow (d) lion
Answer: (b) camel
9. Air pollution is caused by
(a) Insecticides (b) Sewage
(c) Smoke (d) Loud speakers
Answer: (c) smoke
10. If waste materials contaminate the source of drinking water which of the following diseases will spread?
(a) Scurvy (b) Typhoid
(c) Malaria (d) Anaemia
Answer: (b) Typhoid
Environmental Science Multiple Choice Questions
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11. In our country the Van Mahotsav Day is observed on
(a) Second of October (b) First of December
(c) Tenth of August (d) First of July
Answer: (d) First of July
12. Which of the following wastes cannot be decomposed by bacteria to form compost?
(a) Kitchen wastes (b) Plastic and polythene bags
(c) dead plants (d) bodies of insects living in the soil
Answer: (b) Plastic and polythene bags
13. Which of the following problems is not created by noise pollution ?
(a) Diarrhoea (b) Hypertension
(c) Deafness (d) Irritation
Answer: (a) Diarrhoea
14. Plants are green because of the presence of a pigment called:
(a) glucose (b) nitrogen
(c) chlorophyll (d) oxygen
Answer: (a) chlorophyll
15. Air is composed of gases, water vapours and
(a) dust particles (b) rainfall
(c) snowfall (d) light
Answer: (a) dust particles
16. Medicine of quinine is provided by
(a) Eucalyptus plant (b) aconite plant
(c) cinchona plant (d) money plant
Answer: (c) cinchona plant
17. Chief source of energy in environment is
(a) fire (b) moon
(c) sun (d) stars
Answer: (c) sun
18. When trees are cut, amount of oxygen
(a) decreases (b) increases
(c) both (a) and (b) (d) remains same
Answer: (a) decreases
19. Process through which plants reproduce:
(a) Eating (b) Evaporation
(c) Pollination (d) Condensation
Answer: (c) pollination
20. 71% of earth surface is covered with:
(a) land (b) air
(c) water (d) coal
Answer: (c) water
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