$A$: Birds have metanephric kidneys and no urinary bladder.
$R$: South American Ostrich has a urinary bladder.

  • A
    Assertion and Reason both are correct and Reason is the correct explanation of Assertion.
  • B
    Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.
  • C
    Assertion is correct,but Reason is incorrect.
  • D
    Both Assertion and Reason are incorrect.

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Similar Questions

Find the incorrect option regarding the mechanism of urine formation in humans.

The maximum quantity of water required per day by a human body is

Match the following columns:
Column-$I$Column-$II$
$a.$ Loop of Henle$1.$ Carries blood to the kidney
$b.$ Renal artery$2.$ Region where maximum reabsorption occurs
$c.$ Proximal Convoluted Tubule $(PCT)$$3.$ Main site of secretion
$d.$ Glomerulus$4.$ Filtration of blood
$e.$ Distal Convoluted Tubule $(DCT)$$5.$ Plays a significant role in urine concentration

The correct sequence is:

Which of the following statements is/are true?
$I.$ Urine is hypertonic while entering distal convoluted tubule.
$II.$ When the urine moves in the collecting tubule,it becomes hypertonic.
$III.$ Urine is isotonic in proximal convoluted tubule.
$IV.$ Urine becomes more and more hypotonic as it passes through the descending Henle's loop.

Which of the following diagrams is correct with regard to the proximal $(P)$ and distal $(D)$ tubule of the Nephron?

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