Question 15 - Assertion Reasoning Questions (MCQ) - Chapter 6 Class 10 - Life Processes

Assertion (A): Excretory unit of kidneys are nephrons. 

Reason (R): It has no role in secretion of urine.  

Answer

• Nephrons are the basic structural and functional unit of kidneys
• They carry out filtration , selective  reabsorption and tubular secretion to form urine in kidneys
• Urine is then passed out through the urethra , via the ureters and urinary bladder. 
• However, they have no role in secretion of urine. 
• Urine is secreted via the urethra after being collected in the urinary bladder.

Hence,

• The assertion is True
• The reason is True

But the reason is not the correct explanation for the assertion.

So, the correct option is (b)