Class 12

9. Chemical Coordination and Integration question bank (Zoology)

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Q1.

Which of the following causes an increase in sodium reabsorption in the distal convoluted tubule?  

(A)
Increase in aldosterone levels
(B)
Increase in antidiuretic hormone levels
(C)
Decrease in aldosterone levels
(D)
Decrease in antidiuretic hormone levels
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Q2.

Identify the hormone with its correct matching of source and function:  

(A)
Oxytocin – posterior pituitary, growth and maintenance of mammary glands
(B)
Melatonin – pineal gland, regulates the normal rhythm of sleep-wake cycle
(C)
Progesterone – corpus luteum, stimulation of growth and activities of female secondary sex organs
(D)
Atrial natriuretic factor – ventricular wall, increases the blood pressure
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