Botany Basics - Oregon State University

Botany Basics 1. P. lants are essential to life on earth. Either directly or indirectly, they are the primary food source for humans and other animals. Additionally, they provide fuel, replenish the earth's oxygen supply, prevent TOPICS IN THIS CHAPTER. soil erosion, slow down wind movement, cool the atmo- sphere, provide wildlife habitat, supply medicinal com- Plant life cycles pounds, and beautify our surroundings. Internal plant parts Many plants are familiar to us, and we can identify and External plant parts appreciate them based on their external structures.

4 • Botany Basics—Chapter 1 Botany terminology Anther—The pollen sac on a male flower. Apex—The tip of a shoot or root. Apical dominance—The tendency of an apical bud to produce hormones that suppress growth of buds below it on the stem. Axil—The location where a leaf joins a stem. Cambium—A layer of growing tissue that separates the xylem and phloem and

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