The absence of anti-diuretic hormone in humans results in

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The sensory cell that responds to dim light is referred to as the

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The most important plant hormone is

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The gland that is found just below the hypothalamus is the

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The male reproductive organ of a flower is the

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The transfer of pollen grains from the anther to a sigma is

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The chitin in the exoskeleton of many arthropods is strengthened by

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The main structure in vertebrates that supports and protects the body is the

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Which of the following is a waste product of an insect?

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Which of the following forms about 55% of the volume of the blood in man?

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The part of the mammalian skin involved in excretion is the

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Which of the following helps in the clotting of blood?

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