Ch 50: Porifera, Cnidaria & Ctenophora

About This Chapter

Review Porifera, Cnidaria and Ctenophora with this series of helpful biology study resources. Available at any time of day or night, this chapter can help you quickly review for upcoming exams, finish homework assignments and improve your overall understanding of these organisms.

Porifera, Cnidaria & Ctenophora - Chapter Summary

This collection of bite-sized biology lessons helps you review Porifera, Cnidaria and Ctenophora. Inside the chapter, you'll find concise definitions and clear explanations of several organisms and their characteristics, including Leucosolenia, Radiata, Cnidaria, Ctenophora, Porifera and sponges. By the end of the chapter, you should be able to:

  • Outline the characteristics of phylum Porifera organisms
  • Understand Leucosolenia's physiology and structure
  • Identify the harvesting and practical uses of sponges
  • Recognize Radiata's characteristics
  • Understand how Cnidaria and Ctenophora morph and regenerate

To help you check your understanding of the chapter's most important terms and concepts, we've included interactive lesson quizzes and a chapter exam. You can use your course Dashboard feature to jump to specific lesson topics and ask our expert science instructors questions if they arise. The chapter can be accessed at any time using any Internet-connected device.

5 Lessons in Chapter 50: Porifera, Cnidaria & Ctenophora
Test your knowledge with a 30-question chapter practice test
Phylum Porifera: Definition, Characteristics & Examples

1. Phylum Porifera: Definition, Characteristics & Examples

In this lesson, we will explore the phylum Porifera and look at the organisms that make up the group. We will discuss their key features, body structure, their filtration mechanism, and why they are so important to the oceans.

Leucosolenia: Structure & Physiology

2. Leucosolenia: Structure & Physiology

Leucosolenia is a genus of tubular, calcareous sponges that form branching colonies in tide pools. Their colonies have been said to look like tiny bunches of bananas. Read this lesson to learn more about their structure and physiology.

Sponges: Industry, Harvesting & Uses

3. Sponges: Industry, Harvesting & Uses

Despite their plant-like appearance, sponges are animals that live in the sea. They have a long history of being used for the same things we use artificial sponges for today. Come learn about this history and discover some surprising uses of sponges.

Radiata: Definition and Characteristics

4. Radiata: Definition and Characteristics

The super-phylum Radiata describes a unique and interesting group of animals. In this video lesson you'll identify various animals that belong in this classification as well as describe the characteristics that make them so identifiable.

Cnidaria & Ctenophora: Habitat, Morphology & Regeneration

5. Cnidaria & Ctenophora: Habitat, Morphology & Regeneration

Let's take a trip to the sea to look at some interesting creatures called cnidarians and ctenophores. Though the names may not be familiar, the animals should be, as these are things like jellyfish, corals, sea anemones, comb jellies, and others.

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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