E-PolyLearning

46. In any community, various populations live
a. interdependently
b. independently
c. dependently
d. defenselessly
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Answer: (a).interdependently

47. Both abiotic and biotic factors operating in an environment are called as
a. ecological niche
b. ecological community
c. ecosystem
d. ecology
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Answer: (c).ecosystem

48. Series of energy transference in the form of food is called a
a. food pyramid
b. food chain
c. ecological niche
d. food cycle
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Answer: (b).food chain

49. Density can be measured through
a. number of individuals per square meter
b. number of individuals per unit area
c. number of total population in a mile
d. volume per unit mass
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Answer: (b).number of individuals per unit area

50. Lives of organisms are greatly affected by
a. Producers
b. Consumers
c. Decomposers
d. consumers and decomposers
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Answer: (a).Producers