Flowers & Pollination

1. Flowers & Pollination

2. What is a Flower? • Afloweris the part of the plant that makes the seeds.

3. Parts of a Flower

4. Male Parts of a Flower

5. Male Parts of the Flower • Stamen: • Male part of the flower • Made up of the filament and anther • Contains the pollen which is the male reproductive cell • Anther • produces and contains pollen. • It is usually on top of a long stalk that looks like a fine hair. • Filament • Holds the anther • This is the fine hair-like stalk that the anther sits on top of.

6. Anther Filament

7. Female Parts of a Flower

8. Female Parts of the Flower • Pistil • Female part of the flower • Made up of the stigma, style, and ovary. • Stigma • Receives the pollen grains and on which they germinate. • It is the sticky bulb that you see in the center of the flowers • Style • This is the long tube connecting the stigma to the ovary. • Ovary • Female reproductive organ. • Usually at the bottom of the flower, • Has the seeds inside and turns into the fruit that we eat. • Contains ovules or eggs.

9. Ovary Stigma Style

10. Other Important Parts of a Flower • PetalThe colorful, often bright part of the flower. They attract pollinators and are usually the reason why we buy and enjoy flowers. • SepalThe parts that look like little green leaves that cover the outside of a flower bud to protect the flower before it opens.

11. What is Pollination • Pollination:the transfer of pollen from the anther of one flower to the stigma of another flower. • Fertilization: occurs when the sperm in the pollen unites with an egg.

12. Pollinators • Since flowers can't move, they need to be able to attract pollinators or be built so that wind is able to pollinate them. • Pollinators! • Wind • Butterflies • Bees • Bats • Birds • Insects • Flowers attract pollinators with sweet nectar, bright colors, and shapes and structures. • Some flowers open at special times to attract pollinators such as night blooming plants that are pollinated by bats.

13. How Pollination Happens • The bee goes to a flower in search of nectar to eat. • While the bee is there, the bee rubs against the anther and some pollen gets on his bee fur. • The bees goes to another flower for some more nectar. • While on that flower, some of the pollen sticks to the sticky stigma. • The pollen travels down the style into the ovary. • The sperm in the pollen fertilizes the eggs in the ovary to form seeds.

14. Flower Parts You Need to Know • stamen – male part (anther & filament) • anther – makes pollen • filament – hair-like structure; hold up the anther • pistil – female part (stigma, style, ovary) • stigma – sticky; catches pollen • style – tube that pollen travels down • ovary – contains eggs • pollen – yellow powder; fertilizes eggs • seeds – makes new flowers • pollinators – wind, insects, bees, bats, birds

15. Angiosperm • Angiosperm – is plant that has flowers and produces seeds enclosed within a pistil. The angiosperms are a large group and include herbaceous plants, shrubs, grasses, and most trees. • Angiosperms are the most diverse group of land plants, with 416 families.

16. Video • Pollination https://www.youtube.com/watch?v=kt-qkAcvm1Y • Pollinators • https://www.youtube.com/watch?v=LiczM-w3V-U • Pollination Time Lapse • https://www.youtube.com/watch?v=jWC2NfXpbTQ (music only)