• Document: Chapter 31 Plant Structure, Growth,
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Plant Structure, Growth, Introduction Chapter 31 and Reproduction  Some plants, such as coast redwoods, are among the largest and oldest organisms on Earth.  Coast redwoods are gymnosperms, a kind of plant that bears seeds on cones.  Angiosperms, or flowering plants, bear seeds in fruits. PowerPoint Lectures for  Most plants are angiosperms, which will be the focus Campbell Biology: Concepts & Connections, Seventh Edition of this unit on plant structure. Reece, Taylor, Simon, and Dickey © 2012 Pearson Education, Inc. Lecture by Edward J. Zalisko © 2012 Pearson Education, Inc. Figure 31.0_1 Figure 31.0_2 Chapter 31: Big Ideas Plant Structure Plant Growth and Function Reproduction of Flowering Plants Figure 31.0_3 PLANT STRUCTURE AND FUNCTION © 2012 Pearson Education, Inc. Figure 31.1 31.1 CONNECTION: People have manipulated plants since prehistoric times  Humans have engaged in agriculture for about 10,000 years.  Genetic manipulation of crop plants such as wheat began with cross-pollination of plants with desirable Turkey e sc e C r Iraq n t Iran traits. r ti le Fe Egypt Saudi  Today many crop plants are genetically modified Arabia using DNA technology. Sudan © 2012 Pearson Education, Inc. 31.2 The two major groups of angiosperms are the 31.2 The two major groups of angiosperms are the monocots and the eudicots monocots and the eudicots  Monocots and eudicots differ in  Monocots, such as wheat and corn, have – number of cotyledons (seed leaves), – one cotyledon, – pattern of leaf venation, – parallel leaf venation, – arrangement of stem vascular tissue, – scattered vascular bundles, – number of flower parts, and – flower parts in threes or multiples of three, and – root structure. – fibrous roots. © 2012 Pearson Education, Inc. © 2012 Pearson Education, Inc. Figure 31.2 31.2 The two major groups of angiosperms are the monocots and the eudicots

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