BOTANY

Detailed explanation-1: -When male and female flowers are separate but present in the same plants, it is known as monoecy. In some crops, the male and female flowers are present in the same inflorescence such as in mango, castor and banana. In some cases, they are on separate inflorescence as in maize.

Detailed explanation-2: -The factors which favour cross pollination are unisexuality, dichogamy, self sterility, mechanical and structural barrier and heterostyly.

Detailed explanation-3: -Maize that is also called corn in some parts of the world is pollinated by wind. The male anther let go of their pollen and it blows over to a nearby female flower on another plant. Most of the flowers are either male or female on a corn plant(monoecious) Rather than both sexes in one flower(hermaphrodite).

Detailed explanation-4: -Maize produces a large number of pollen grains. Its pollen grains are non-sticky and can be transferred with the help of the wind currents. The stamens of maize are exposed so that the chances of trapping of pollen grains are maximized.

Detailed explanation-5: -Maize is a wind-pollinating crop and is able to cross-pollinate in neighbouring fields.