2nd PUC Biology Series 5

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PUC Science 2nd Year  Biology Series-5 quiz

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Created on By wefru

Biology Series 5

TEST YOUR KNOWLEDGE OF SCIENCE

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Q 41. Pyramid of numbers in a pond ecosystem is

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Q.43 Which one of the following gases contributes maximum to the green house effect’ on the earth?

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Q.44 The dominant second trophic level, in a lake ecosystem, is

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Q.45 Sounds above what level are considered hazardous noise pollution?

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Q.46  A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called

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Q.47 When huge amount of sewage is dumped into a river, its B.O.D. will

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Q.48  If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because

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Q.48  If we completely remove the decomposers from an ecosystem, its functioning will be adversely affected, because

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Q.49  In a biotic community, the primary consumers are

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Q.50 The abundance of a species population, within its habitat, is called

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