Often, small drainage basins or watersheds combine with one another, creating larger and larger networks of drainage basins. All of these combined drainage basins are together referred to simply as a drainage basin, or as one watershed. The area between two drainage basins is known as a drainage divide.ften, small drainage basins or watersheds combine with one another, creating larger and larger networks of drainage basins. All of these combined drainage basins are together referred to simply as a drainage basin, or as one watershed. The area between two drainage basins is known as a drainage divide.
The fertilized ovules will mature into seeds, which are the starting point of the next generation of plants. Fruits are the ripened ovary of a flower and protect and help disperse the seeds by attracting dispersers.Movement of pollen often also involves specialized pollinators including insects, reptiles, birds, bats, and other mammals. Flowers evolved colors, patterns, scents and nectar rewards to attract pollinators.icture 9: The male reproductive parts of a cherry flower. The female reproductive part of a flower, the gynoecium, is composed of one or more carpels. A carpel is made up of a stigma, a style, and an ovary. The ovary houses the ovules that will develop into seeds after fertilization.
When ripe pollen from an anther of the same kind of flower catches on the stigma, each pollen grain sends out a tiny threadlike tube. The tube grows down through the style and pierces one of the ovules in the ovary. This process is called fertilization.Each ovule must receive the contents of the pollen tube before it can develop into a seed. It usually takes the tube from.his. Encyclopaedia EncyclopÃ¦dia, Britannica. Inc when ripe pollen from an anther of the same kind of flower catches on the, stigma each pollen grain sends out a tiny threadlike. Tube the tube grows down through the style and pierces one of the ovules in the. ovary