Which of the following essential substances is contained in vegetables?

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Which of the following organisms exhibits extracellular digestion?

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Which of the following is considered to be the first product of photosynthesis?

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Which of the following groups of compounds are products of the light stage of photosynthesis?

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In the test for starch, the leaf is first placed in boiling water to

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Which of the following statements about water in humans is not correct? it

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The function of the amniotic fluid in humans is to

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Placentation of plants is best described as the

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The layer of light-sensitive cells in the human eye is called the

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Which of the following is the function of the iris of the mammalian eye?

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The part of the nervous system that interprets blinking of the eye is the

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The endocrine gland secreting hormone that induces the thyroid gland to produce more thyroxine is

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