During respiration, air circulates round plant tissues via the

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The end product of glycolysis in plants and animals is

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Which of following is NOT involved in the transport of substance in the body?

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The mammalian organ which acts both as a digestive and as an endocrine organ is the

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Which vitamin plays an important role in blood clotting?

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In an experiment to investigate the effect of nitrogen on the growth of plants, the substrate should be a medium of

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2H2 → 2H2 + O2(g). The equation above represents a part of the light stage of ph otosynthesis. Which of the following must be presents for this reaction to occur?

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Secondary thickening in dicotyledonous stem is controlled by the

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Birds maintain their body temperature with the help of their

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Which of the following vertebrates does the skin function as a respiratory surface?

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Which of the following insects lays its eggs in horny, purse-like cases?

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Which of the following is transmitted through mosquito bite?

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