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