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Chapter 15: Plant Evolution and Classification

Difficulty Level: At Grade Created by: CK-12
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Plant Evolution and Classification


Lesson 15.1: Introduction to the Plant Kingdom

15.1.1 What Are Plants?

  • How Do Plants Obtain Food?
  • What Do Plants Need?

15.1.2 The Importance of Plants

15.1.3 Life Cycle of Plants

15.1.4 Evolution of Plants

  • The Earliest Plants
  • Life on Land
  • Vascular Plants Evolve
  • Seed Plants Emerge
  • Seed Plants Diverge

15.1.5 Classification of Plants

15.1.6 KQED: Albino Redwoods, Ghosts of the Forest

Lesson 15.2: Four Types of Modern Plants

15.2.1 Nonvascular Plants

  • Characteristics of Nonvascular Plants
  • Evolution of Nonvascular Plants
  • Diversity of Nonvascular Plants

15.2.2 Vascular Plants

  • Vascular Tissues
  • Evolution of Vascular Plants
  • Diversity of Seedless Vascular Plants

15.2.3 Seed Plants

  • Parts of a Seed
  • Classification of Seed Plants
  • Evolution of Seed Plants

15.2.4 Flowering Plants

  • Parts of a Flower
  • Flowers and Pollinators
  • Other Characteristics of Flowering Plants
  • Evolution of Flowering Plants
  • Classification of Flowering Plants

Pacing the Lessons

Use the Class Periods per Lesson table below as a guide for the time required to teach the lessons of this chapter.

Lesson Number of Class Periods
15.1 Introduction to the Plant Kingdom 2.5
15.2 Four Types of Modern Plants 2.5
  • Class periods are assumed to be 60 minutes long.

Online Resources

See the following Web sites for appropriate laboratory activities:

1. Students can investigate plant structures and plant diversity by doing the lab What Parts of a Plant Do We Eat? (Lesson 15.1).

2. In this simple investigation, students will collect and analyze pollen released by wind-pollinated plants. (Lesson 15.2)

These Web sites may also be helpful:

1. This Web site has a wide range of information on plants, including the fossil record, life history, ecology, systematics, and morphology of plants.

2. At these URLs, you can find more information about bryophytes.

3. Students can interact with a virtual plant cell at this Web site.

4. For detailed coverage of all lesson topics, visit this URL.

5. The existence of non-photosynthetic plants is often overlooked. Direct students to the URL below. It focuses on the parasitic plant Rafflesia arnoldii, which also produces the world’s largest flower.

6. Go to this USDA Web site for detailed data and images of a huge number of plants.

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