* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Flower - Xavier High School
Survey
Document related concepts
Gartons Agricultural Plant Breeders wikipedia , lookup
Plant ecology wikipedia , lookup
Plant breeding wikipedia , lookup
Evolutionary history of plants wikipedia , lookup
Ornamental bulbous plant wikipedia , lookup
Plant physiology wikipedia , lookup
Ecology of Banksia wikipedia , lookup
Plant morphology wikipedia , lookup
Plant evolutionary developmental biology wikipedia , lookup
Perovskia atriplicifolia wikipedia , lookup
Fertilisation wikipedia , lookup
Plant reproduction wikipedia , lookup
Flowering plant wikipedia , lookup
Transcript
Flower The organ responsible for sexual reproduction in plants Function- produce gametes pollination fertilization develop seeds develop fruit 4 Basic Whorls of a Flower Calyx- Outermost Whorl All of the sepals collectively Corolla- 2nd Outermost Whorl All of the petals collectively 4 Basic Whorls of a Flower Stamen- 3rd Outermost Whorl Male structure of the flower Pistil- Made of fused carpels- Innermost Whorl Female structure of flower Diagram 1- Flower Structure 1. Petals Colorful leaf-like parts, attract animals/insects, aids in pollination 2. Stamen Male structure Diagram 1- Flower Structure 3. Pistil Female structure 4. Pedicel/Receptacle Stalk like part, supports the flower Diagram 1- Flower Structure 5. Sepals Small leaves that surround and protect the flower bud 6. Stigma Sticky top to the pistil, collects the pollen during pollination Diagram 1- Flower Structure 7. Style Long stalk like part that extends from ovary, supports the stigma 8. Ovule Located inside the ovaries, will develop into a seed after fertilization Diagram 1- Flower Structure 9. Ovary Enlarged base of the pistil, will develop into fruit after fertilization 10. Filament Slender stalk that supports the anther of the stamen Diagram 1- Flower Structure 11. Pollen Formed in the anther, contains 2 nuclei, 1 tube nucleus, 1 generative nucleus 12. Anther Knob like end of the stamen, forms the sperm nuclei and the pollen grains Diagram 2- Pollination (p 617) The transfer of pollen from the anther to the stigma of flowers Usually aided by insects or wind Diagram 2- 2 types Self pollination Same plant Either the same flower or 2 flowers on the same plant Or 2 genetically identical plants Cross pollination Two genetically different plants Diagram 2- Pollination Fertilization (p 617) 2 separate events Pollination occurs on the stigma Fertilization occurs in the ovule Diagram 2- After Pollination (p 617) Pollen grain releases tube & generative nucleus into pistil #14. Tube nucleus develops pollen tube #13. Two sperm nuclei- from mitosis of the generative nucleus #15. Pollen tube develops through style to ovule 2 sperm nuclei travel through tube to ovule Diagram 2- Fertilization (p 617) Double fertilization in the ovule One sperm nucleus fertilizes (#16) egg nucleus to form the zygote (fertilized egg), this becomes the embryonic plant of the seed Diagram 2- Fertilization (p 617) Second sperm nucleus unites with (#17) 2 polar bodies, forms triploid (3n) cell that develops into endosperm of the seed Diagram 3- Gamete FormationMale (p 615) Occurs in anther Sketch Diploid Meiosis 4 haploid cells Mitosis Pollen grain with 2 nuclei Diagram 3- Gamete FormationFemale (p 615) Occurs in ovule Sketch Diploid meiosis 4 haploid cells(3 die) mitosis mitosis mitosis 8 haploid cells (5 die) 3 haploid cells Seed (p 620) An embryonic plant with a food source Grows into a new plant Germination Water, temp., oxygen Plumule (shoot tip w/embryonic leaves) Epicotyl (stem) Hypocotyl Radicle (root) Cotyledon (food source) Endosperm (food source) Fruit (pp 618, 619) Surrounds seeds Dispersal of seedsspread seeds around Wind Water Animals Edible Carrier