What type of flowers are found in dioecious plants?

Assertion $(A) -$ Flowering plants have developed many outbreeding devices to discourage self-pollination and to encourage cross-pollination.
Reason $(R) -$ Continued self-pollination results in inbreeding depression.

In which of the following plants are autogamy and geitonogamy prevented?

Define the following terms:
$1.$ Chasmogamous
$2.$ Cleistogamous

In which one of the following, both autogamy and geitonogamy are prevented?

Maturation of male and female sex organs at different times in a flower is called