Excretory products responsible for the red, purple and blue colours of flowers are called

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Transpiration can be measured with a

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If a ring of bark and phloem is removed from a stem, the

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The vilius in the small intestine is significant because it

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The organ which secretes digestive enzymes as well as hormones is the

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Which of the following food substance will produce a brick-red colour when warmed with Benedict’s solution?

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The first step in the process of photosynthesis is the

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The mode of nutrition in which digestion is extracellular is

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Which type of the following cells is thin-walled and living at maturity?

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Which of the following disease is rarely spread by a housefly?

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The nephridia in the earthworm form part of the

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A feature which adapts birds to flight is the possession of

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