In the figure given below,the plant bears two different types of flowers marked '$A$' and '$B$'. Identify the types of flowers and state the type of pollination that will occur in them.

(N/A) '$A$' is a chasmogamous flower,while '$B$' is a cleistogamous flower.
$A$ bisexual flower which normally opens is called a chasmogamous flower. Cleistogamous flowers do not open at all.
Cleistogamous flowers are invariably autogamous as there is no chance of cross-pollen landing on the stigma.
In a normal flower which opens and exposes the anthers and stigma,complete autogamy is rather rare. Chasmogamous flowers may show autogamy,geitonogamy,or xenogamy.