Q.

Assertion: Mendel selected the pea plant for his experiments.
Reason: Pea plant is cross-pollinating and has unisexual flowers.

1 Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.  
2 Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion.  
3 Assertion is true but Reason is false.  
4 Assertion is false but Reason is true.  

Ans.

(3)

The flowers of pea plant are bisexual and they are self-pollinating, and thus, self and cross-pollination can easily be performed. They have a shorter life span and are the plants that are easier to maintain. Thus, Mendel chose the pea plant. Thus, assertion is true but reason is false.