The process of anearobic respiration of yeast in sugar solution is known as

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Which of the following statement is correct about diffusion?

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The mechanism of gaseous exchange in living organisms is essentially by

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Spirogyra is regarded as a multicellular plant because

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The organelle which eliminate water from the body of protozoa is

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The cell is a functional unit of living organisms because

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The property of clay soil that prevents it from supporting thick vegetation is its

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Lamarck’s evolution theory could be summarised by the statement that

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The swarming especially at the beginning of the rainy season is a courtship behaviour shown by

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The division of labour in social insects is an example of

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The changing of colour by a chameleon to that of the environment is an example of

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Which of the following does not illustrate adaptation to the environment ?

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