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Ch 53: Change in Living Things

About This Chapter

Here we will take a look at life cycles, natural selection, how plants and animals adapt, and the effects of stimuli on living things. These lessons will discuss normal changes seen in reproduction and growth in living things as well as abnormal changes as in mutations.

Change in Living Things - Chapter Summary

This chapter presents information about how animals and plants change over the time it takes for the cycle of life. Get to know adaptation and natural selection, and requirements found in the environment that are necessary for reproduction, growth and dynamic homeostasis.

Examine the meaning, effects and examples of external and internal stimuli. Analyze plant adaptation and responses to environmental stimuli and stress. See additional lesson information such as:

  • Definition, stages and examples of what a life cycle is
  • Different plant types and their life cycles
  • When life copies DNA wrong creating a resulting mutation
  • Feedback systems and their role in the regulation of reproduction, growth and dynamic homeostasis
  • Temperature regulation and homeostasis in humans
  • Adaptation to stress and homeostasis

You can access the lessons in this chapter from your computer or your Internet-ready mobile device. Track the progress you are making on this study program through your dashboard.

10 Lessons in Chapter 53: Change in Living Things
Test your knowledge with a 30-question chapter practice test
What is a Life Cycle? - Definition, Stages & Examples

1. What is a Life Cycle? - Definition, Stages & Examples

In this lesson, you'll learn the definition of 'life cycle' and find out about the three basic stages of a life cycle. You'll also explore examples of different life cycles.

Life Cycles of Different Types of Plants

2. Life Cycles of Different Types of Plants

From spores to gametophytes to flowers, plants have many different life cycles. This lesson will focus on the life cycles of three groups of plants: the flowering angiosperms, the ferns and the mosses.

Mutations: When DNA Is Copied Wrong

3. Mutations: When DNA Is Copied Wrong

In this lesson, we will learn how mutations, or errors in DNA, come about, what kinds of effects they may have, and how they can impact populations as a whole.

Natural Selection & Adaptation: Definition, Theory & Examples

4. Natural Selection & Adaptation: Definition, Theory & Examples

How does natural selection help shape the amazing types of animals we witness around us? In this lesson, we'll explore adaptations and what they can tell us about a species' past evolution.

Internal & External Stimuli: Definition & Examples

5. Internal & External Stimuli: Definition & Examples

What are internal and external stimuli? Learn how the body uses messages from outside and inside of you to maintain perfect balance and keep you healthy and safe.

Environmental Stimuli & Stress: Plant Adaptations & Responses

6. Environmental Stimuli & Stress: Plant Adaptations & Responses

Plants get stressed out about a lot of stuff, like floods, droughts, high heat, and cold. And they have ways in which they deal with these kinds of stress. This lesson gives some examples of how this occurs.

The Environmental Requirements for Growth, Reproduction & Dynamic Homeostasis

7. The Environmental Requirements for Growth, Reproduction & Dynamic Homeostasis

Cells need to maintain internal environments that are different from their external environments in order to grow and reproduce. In this video lesson, you will understand some ways that cells can control their internal conditions to ensure proper biological functioning.

Using Feedback Systems to Regulate Growth, Reproduction & Dynamic Homeostasis

8. Using Feedback Systems to Regulate Growth, Reproduction & Dynamic Homeostasis

In order to maintain specific internal conditions, organisms use feedback mechanisms. Feedback is essential to the regulation of internal environments, which allows for proper biological functioning.

Homeostasis and Temperature Regulation in Humans

9. Homeostasis and Temperature Regulation in Humans

Do you wonder how your body is able to maintain a consistent temperature? Have you ever questioned why you get goosebumps when you're cold? This lesson will introduce you to homeostasis and answer your questions about body temperature regulation and reactions, like goosebumps.

Homeostasis and Adaptation to Stress

10. Homeostasis and Adaptation to Stress

Homeostasis can seem complicated, but really it's just a balancing act. This lesson will look at how stress can affect us and the important part it plays in maintaining homeostasis.

Chapter Practice Exam
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Practice Final Exam
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