AP BIOLOGY

Detailed explanation-1: -Flowering plants reproduce sexually through a process called pollination. Flowers contain male sex organs called stamens and female sex organs called pistils. The anther is the part of the stamen that contains pollen. Pollen contains the male gametes.

Detailed explanation-2: -In the plants included in this article-bryophytes (mosses, hornworts, and liverworts) and tracheophytes (vascular plants)-sexual reproduction is of the oogamous type, or a modification thereof, in which the sex cells, or gametes, are of two types, a larger nonmotile egg and a smaller motile sperm.

Detailed explanation-3: -Examples of bisexual flowers are the following flowering plants – Hibiscus rosasinensis, Pisum sativum, Petunia hybrida etc. In Unisexual flowers, either the male reproductive part i.e. the stamen is present or the female reproductive part is the pistil is present. Examples are Papaya plant, Mulberry plant etc.