Class XI

If kidney tissues are supplied with blood low in oxygen then :
  1. ultrafiltration stops
  2. both tubular reabsorption and ultrafiltration stops
  3. tubular reabsorption stops
  4. both tubular reabsorption and ultrafiltration continue normally
The hormone with enzymatic action which catalyses conversion of angiotensinogen into angiotensin is :
  1. JFA
  2. Aldosterone
  3. ANF
  4. Renin
Ascending limb of Henle’s loop is not permeable for :
  1. Cl−
  2. K+
  3. Na+
  4. H2O
The part of a nephron which adds some material to the filtrate is :
  1. Bowman’s capsule
  2. Distal convoluted tubule
  3. Proximal convoluted tubule
  4. Loop of Henle
Read the following : i. Avian kidneys have very short loops of Henle. ii. Birds are unable to make urine as hypotonic as mammals can.
  1. both are wrong
  2. Statement ii) is correct and i) is wrong.
  3. Statement ii) is wrong and i) is correct.
  4. both are correct
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