1. SCIENCE W-1 REPRODUCTIVEPARTSOFAFLOWER (1).ppt
- 1. The Reproductive Parts of a Flower Stolen From :Ann Morris, Science Advisory Teacher, PPEC, 15.5.02
- 2. Flower Objectives • Describe the functions of each part of the flower
- 5. Flowering Plants Almost 90 percent in the plant kingdom are flowering plants. Botanists label flowering plants as either angiosperms or gymnosperms. Angiosperms have seeds that are enclosed in a container or case called an ovary. The flowers are the most distinctive features of angiosperms.
- 6. Flowers The reproductive structures of plants. Ensure fertilization of the egg cell within the ovule. When the egg cell is fertilized, the ovule develops into a seed., and the ovary that encloses the ovules ripens and becomes the fruit.
- 7. Parts of a flower A flower is composed of the following parts: Corolla comprises the petals of flowers. They come in various shapes and sizes. They function for protection and attraction. They contain nectarines that give them the characteristic scent. Their bright colors and scent attract agents of pollination.
- 8. Calyx comprises the sepals of the flowers. -typically green -sepals protect the flower when it is still a bud and contribute to the process of photosynthesis of the plant. -the petals and sepals form the floral envelope of a flower.
- 9. Receptacle supports the entire flower. Peduncle or stalk connects the flower to the branch or stem. Collectively, these parts- calyx, corolla, receptacle, and stalk- comprise the accessory parts that protect and support the essential parts.
- 10. Stamens • The stamens are the male part of the flower. • The plant makes pollen in the part of the stamen called the anther. stamen anther
- 12. • Part of the stamen • Produces and holds pollen head of the stamen that contain pollens grain - Expanded and lobular structure at the tip of the filament. It is the pollen- producing organ of the flower. Anther
- 13. • Stalk that holds up the anther • long stalk to supports the anther Filament
- 14. The Stigma • The stigma is the top of the female part of the flower. • Pollen from another flower collects on the stigma’s sticky surface. • Found at the end of the pistil
- 15. Pistil • The female part of the flower
- 16. Style • The neck of the pistil
- 17. • Part of the pistil that contains the ovules The Ovary
- 18. The Ovary • The ovary protects the ovules. • Pollen travels to the ovules and fertilization takes place. • Now the ovules will develop into seeds. pollen ovule ovary
- 19. Ovule • The part of the flower in which the eggs are produced and seeds develop
- 20. 3. these attract insects 4. where the pollen is made 1. pollen sticks to this 2. where the seeds grow 5. These protect the flower before it opens Write the correct words in the boxes: stamens, stigma, petals, ovary, sepals
- 21. Write the correct words in the boxes: stamen, stigma, petals, ovary, ovules, pollen, sepals, anther. 6. The male part of the flower 9. This is where pollen is made 10. Insects carry this from flower to flower 7. These attract insects 8. This is the female part of the flower, which receives the pollen 12. These become seeds after fertilization 13. This is where the seeds will grow 11. These protect the flower before it opens
- 22. Excellent!