1 / 8

How do flowers reproduce?

How do flowers reproduce?. How bout them flowers? Ummm, ummmm GOOOD!. True or False. T/F Sperm cells do not have to reach the eggs for fertilization to occur. T/F sperm cells of a flowering plant are contained in the ovary.

adanna
Télécharger la présentation

How do flowers reproduce?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. How do flowers reproduce? How bout them flowers? Ummm, ummmm GOOOD!

  2. True or False • T/F Sperm cells do not have to reach the eggs for fertilization to occur. • T/F sperm cells of a flowering plant are contained in the ovary. • T/F Pollination occurs when pollen grains are transported from anthers to stigmas. • T/F Each ovule contains an egg. • T/F Sperm cells within the pollen grain move down the pollen tube into an ovule and fuses with the egg undergoing fertilization.

  3. Pollination • To get more flowers, pollination must take place. 1.Pollen is transferred from the stamen (male reproductive part) to the pistil (female reproductive part).

  4. Pollination 2. Fertilization begins when pollen grains attach to the stigma. 3. Pollen lands on the stigma, a tube grows from the pollen grain through the style to the ovary. 4. Ovary has ovules containing the eggs. 2. 3. 4.

  5. Fertilization 5. Sperm cells within pollen grains move down the pollen tube into an ovule. 6. Fertilization occurs as one of the sperm cells fuses with egg inside the ovule. 5. 6.

  6. In some flowers: • Pollen falls on the stigma of the same flower. • Self-pollination occurs.(asexual reproduction) • Pollen from one flower falls on the stigma of a different flower. • Cross pollination takes place.(asexual reproduction)

  7. Self-Pollinating Flower Male Female Pistil

  8. True or False must • T/F Sperm cells do not have to reach the eggs for fertilization to occur. • T/F sperm cells of a flowering plant are contained in the ovary. • T/F Pollination occurs when pollen grains are transported from anthers to stigmas. • T/F Each ovule contains an egg. • T/F Sperm cells within the pollen grain move down the pollen tube into an ovule and fuses with the egg undergoing fertilization. Pollen grains

More Related