2nd PUC Biology Series 4

PUC Science 2nd Year  Biology Series-4 quiz

Created on By 52fd849a905aedf0249df9e69d61b55a?s=32&d=mm&r=gwefru

Biology Series 4


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Q.31 River water deposits

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Q.32 A fertile agricultural soil appears deep coloured at the surface as compared to soil one metre down. The reason for colour of top soil is

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Q.33 Soil particles determine its

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Q.34 Ultraviolet radiations from sunlight causes a reaction that produces

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Q.35 American water plant that has become a troublesome water weed in India

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Q.36 Study of inter-relationships between organisms and their environment is

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Q.37 The sum total of the populations of the same kind of organisms constitute

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Q.38 Soil best suited for plant growth is

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Q.39  Association of animals when both partners are benefitted

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Q.40 Pyramid of numbers deals with number of

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