PDF chapter test TRY NOW

In each of the following questions, a statement of Assertion is given and a corresponding statement of Reason is given just below it. Of statements given below mark the correct answer as:
 
a. If both Assertion and Reason are true and Reason is the correct explanation of Assertion
b. If both Assertion and Reason are true that Reason is not the correct explanation of Assertion
c. Assertion is true but Reason is false
d. Both Assertion and Reason are false
  
1.
Assertion (A):Urea is excreted out through the kidneys.
Reasoning (R):Urea is a toxic substance.
  
2.
Assertion (A):In both the sexes gonads perform dual function.
Reasoning (R):Gonads are also called primary sex organs.