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NEETZoologyExcretory Products and their Elimination

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The Juxta Glomerular Apparatus (JGA) is a special sensitive region formed by cellular modifications in the proximal convoluted tubule and the afferent arteriole. Reason (R): A fall in glomerular filtration rate (GFR) activates the JG cells to release renin. In the light of the above statements, cho

Options

  1. ABoth Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A)
  2. BBoth Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A)
  3. CAssertion (A) is true but Reason (R) is false
  4. DAssertion (A) is false but Reason (R) is true

Correct answer

D. Assertion (A) is false but Reason (R) is true

Step-by-step solution

Assertion (A) is false because the Juxta Glomerular Apparatus (JGA) is a special sensitive region formed by cellular modifications in the distal convoluted tubule (DCT) and the afferent arteriole at the location of their contact, not the proximal convoluted tubule (PCT). Reason (R) is a true statement as a fall in glomerular blood flow, glomerular blood pressure, or GFR can activate the JG cells to release renin, which initiates the RAAS pathway. Thus, Assertion (A) is false but Reason (R) is true. Answer: Assertio

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