Prentice Hall Biology: Online Textbook Help
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Ch 26: Prentice Hall Biology Chapter 26: Sponges and Cnidarians

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About This Chapter

The Sponges and Cnidarians chapter of this Prentice Hall Biology Textbook Companion Course helps students learn essential biology lessons of sponges and cnidarians. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Sponges and Cnidarians textbook chapter.

How it works:

  • Identify the lessons in Prentice Hall Biology's Sponges and Cnidarians chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the sponges and cnidarians topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • The evolutionary history of animals and why it's important to know
  • The definition and characteristics of sponges
  • The definition and characteristics of cnidarians

Prentice Hall Biology is a registered trademark of Prentice Hall, Inc., which is not affiliated with Study.com.

3 Lessons in Chapter 26: Prentice Hall Biology Chapter 26: Sponges and Cnidarians
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The Evolution of Animals: Importance & Evolutionary History

1. The Evolution of Animals: Importance & Evolutionary History

Animals, including humans, consists of multi-cellular organisms that have undergone an evolution from early life forms. Learn about the characteristics of organisms, their body structures, and the importance of understanding the evolutionary history and characteristics of animals.
Parazoa: Definition and Characteristics

2. Parazoa: Definition and Characteristics

Parazoans are sponges of various sizes, shapes, and colors that lack specialized tissue and are classified as animals. Learn about the definition, characteristics, and overall composition of parazoa.
Radiata: Definition and Characteristics

3. Radiata: Definition and Characteristics

Radiata is a group of invertebrates that includes animals like jellyfish, corals, and sea anemones. Learn the definition of radiata, explore their characteristics, and discover the differences between examples like Ctenophora and Cnidarians.
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