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

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

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

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20. The part of the nervous system that interpretes blinking of the eye is the

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19. Which of the following endocrine glands is a master gland?

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18. The glomerular filtrate contains the following substances except

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17. In cold condition, the mammalian body reacts in the following ways except

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16. Which organ removes the largest quantity of water from the blood ?

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15. Transpiration in plants results in the

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14. Which of the following constitutes the cellular components of the mammalian blood?

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13. Which of the following structures of the human body provides the best surface for diffusion ?

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12. The function of the human red blood cells is to

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