AP BIOLOGY

Detailed explanation-1: -Butterflies receive nectar when they deposit pollen into flowers, resulting in cross-pollination.

Detailed explanation-2: -First the basics; like humans, butterflies are either male or female. They mate, joining the tips of their abdomens, and the male passes sperm to the female in order to fertilize her eggs. The female then lays her eggs on plants or on the ground. All very straightforward.

Detailed explanation-3: -Sexual reproduction occurs in a variety of ways in animals. In some species, such as fish, the male releases sperm over the eggs after the female has laid them. In other species, such as birds and most mammals-including human beings-the male releases sperm into the female reproductive tract.

Detailed explanation-4: -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-5: -Pollination is the main mode of sexual reproduction in plants, which occurs when the transfer of pollen (male) from the anther of a flower to a stigma (female) results in fertilization which produces seeds and, in some cases, fruits.