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Ch 14: Plant Growth & Movement

About This Chapter

Use this overview of plant growth and movement to improve your understanding of topics like plant hormones, seasonal growth cycles, tropisms, leaf abscission, and more. These brief lessons are a great resource for individuals preparing for an exam.

Plant Growth & Movement - Chapter Summary

The lessons in this chapter provide an overview of plant growth and movement. You'll review the effect of winter on trees, the hormonal regulation of senescence, and the process of vernalization. You'll also take a look at the complexity of plant growth during different cycles. After completing the chapter, you should be prepared to:

  • Discuss the functions of tissues produced during primary and secondary growth of plants
  • Explain how plant hormones help to regulate the growth and reproduction of plants
  • Explore the seasonal growth cycles of perennial, annual, and biennial plants
  • Detail the function of thigmotropism in plants
  • Define terminal bud, plant senescence, and leaf abscission
  • Explain how the amount of sunlight can influence when flowers are produced
  • Describe the purpose of vernalization
  • Examine tropisms and how plants respond to the environment in order to survive

These video and text lessons help you quickly and easily get up to speed on plant growth and movement. Vocabulary words are highlighted in bold print for quick reference. You can use the Help tab or your Dashboard to submit questions to instructors if you get stuck on a topic. For video lessons, the timelines let you easily navigate to specific topics.

11 Lessons in Chapter 14: Plant Growth & Movement
Test your knowledge with a 30-question chapter practice test
Primary Growth of Plants

1. Primary Growth of Plants

In this lesson, you'll learn about how a plant grows taller and how this is different from a plant growing wider. You'll also learn about the types of tissues produced during primary growth and the functions of those tissues.

Secondary Growth in Plants

2. Secondary Growth in Plants

Secondary growth allows woody plants to grow very tall and strong. Growing outward as well as upward provides structure, support, and protection to these plants that they would not otherwise have.

Plant Hormones: Chemical Control of Growth and Reproduction

3. Plant Hormones: Chemical Control of Growth and Reproduction

We most often think of hormones as things that control our actions and development. However, even plants have these chemicals to help regulate growth and reproduction.

Seasonal Growth Cycles: Perennial, Annual and Biennial Plants

4. Seasonal Growth Cycles: Perennial, Annual and Biennial Plants

We continue to grow and change throughout our entire lives, living through many seasons and years. Plants have different patterns of growth and development regarding seasons, which we will look at in this lesson.

Thigmotropism in Plants: Definition & Overview

5. Thigmotropism in Plants: Definition & Overview

Tropisms are natural responses of organisms to external stimuli. Thigmotropism is a response that's often seen in plants in response to touch or contact. In this lesson, you'll learn about thigmotropism and its functions in plants.

Terminal Bud: Definition & Function

6. Terminal Bud: Definition & Function

Plant growth can be very complex when you get into all of the cycles that occur during it. Like humans, a lot of the plant grows at once. In this lesson, we will discuss the terminal bud and what occurs there.

Plant Senescence: Definition & Hormonal Regulation

7. Plant Senescence: Definition & Hormonal Regulation

In this lesson you will learn about senescence, the process of aging, in plants. In particular you'll look at the different hormones involved in the regulation of aging.

Leaf Abscission: Definition & Purpose

8. Leaf Abscission: Definition & Purpose

Every year we see trees drop their leaves in anticipation of winter. This actually has a specific purpose and reason. Abscission occurs in many different plants for a variety of reasons, and in this lesson, we will look at the specifics of abscission.

Photoperiodicity: Short-day, Long-day and Day-Neutral Plants

9. Photoperiodicity: Short-day, Long-day and Day-Neutral Plants

Ever wonder why some plants will bloom in the spring but others in the summer? The length of daylight can influence when a flower will bloom. We will look at how the amount of sunlight regulates when plants produce flowers.

Vernalization: Definition & Process

10. Vernalization: Definition & Process

Certain plants have very specific growth requirements. In this lesson you'll learn about a process called vernalization, how it works in nature and how to achieve it artificially.

Tropisms: Phototropic, Geotropic and Thigmotropic Plant Growth

11. Tropisms: Phototropic, Geotropic and Thigmotropic Plant Growth

Animals aren't the only things that can respond to the environment. While plants may seem inanimate at times, they, too, can respond to the environment in order to better survive.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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