BIO 111 Chapter Notes - Chapter 21, 28: Gynoecium, Inflorescence, Flowering Plant
Document Summary
21. 5 flowers and fruits increase the reproductive success of angiosperms. Flower the sexual structure of the angiosperm. Fruit a dispersal tactic that attracts animals and helps plant spread their seeds. The sexual structures of angiosperms are flowers: some flowers may be single or in inflorescence. Imperfect (dioecious) a flower that has only one functional sex organ, but the plant has both male and female imperfect flowers. Angiosperms have coevolved with animals: animals are plants pollinators therefore plants hve adapted to attract more animals, colorful petals, pollen grains, nectar, fruit, sticky pollen. The angiosperm life cycle produces diploid zygotes nourished by triploid endosperms. In the pollen grain there are two male gametes involved in fertilization: double fertilization the first male gamete combines with a female gamete to form the zygote. Recent analyses have revealed the phylogenetic relationships of angiosperms: monocots (grasses) and eudicots (non-woody plants) include the majority of angiosperm species. Also helps with buoyancy and slower metabolic rate.
