Chapter 22 Introduction to Plants El Zoor Jenna
- Slides: 5
Chapter 22: Introduction to Plants El- Zoor, Jenna Biology- Period 4 Mr. Miguez November 18, 2013
22. 1 What is a Plant? • In order for plants to survive they need to have; water, minerals, sunlight, and gas exchange. • Plants adapted to life with vascular tissue, and were more capable of doing things without water, and conserving it. • The two phases of the life cycle of land plants are a diploid and haploid phase.
22. 2 Seedless Plants • Green algae are found in salt and fresh water, and also moist area, which means they are mostly aquatic. • The lack of vascular tissue is the reason why bryophytes are small. • Without vascular tissues, plant would not be able to transport nutrients or water, and also for vascular plants to move fluids through their bodies against the force of gravity.
22. 3 Plant Seeds • Process that is reproductive in cones and flowers, sperm transfer, and protection of embryo seeds are adaptations that allow seeds reproduction without open water. • Pollen to the female cone lets fertilization take place in gymnosperms in the absence of water.
22. 4 Flowering Plants • Angiosperms reproduce sexually by flowers, and develop into fruits that protect, surround, and disperse the seeds. • Angiosperms are categorized by how strong the stems are, number of seed leaves, and the growing seasons numbers they live.
