About This Chapter
Invertebrates - Chapter Summary and Learning Objectives
'Invertebrates' is basically another name for animals without spines. Since that includes a lot of sea creatures as well as insects and worms, invertebrates are a very large and important part of the animal population. This chapter looks at the different types of animal bodies that fall into the invertebrate category. You will be introduced to ocean invertebrates, worms, mollusks, echinoderms (such as starfish and sand dollars) and arthropods and insects. You'll learn about qualities they all share as well as features that set them apart from each other. By the end of this chapter you should be able to:
- Define the broad characteristics of the animal kingdom
- Give a definition and examples of the invertebrate category of animals
- Describe the main features and distinctions of six different types of invertebrates
- Explain the importance of these types of animals
|Animal Body Plans: Classifications and Features||Understand the main characteristics and different types of animal bodies.|
|Invertebrates: Definition & Examples||Learn what separates invertebrates from other types of animals.|
|Ocean Invertebrates: Sponges & Cnidarians||Describe key qualities of sponges and cnidarians (marine animals such as jellyfish).|
|Worms: Types & Features||Learn the differences between flat, round and segmented worms.|
|Mollusks: Characteristics & Types||Describe the features that define mollusks; learn some of the different types and understand what makes them important.|
|Echinoderms: Traits, Types & Roles||Study echinoderms, such as sea urchins and starfish, and understand how they fit in the animal kingdom.|
|Arthropods: Definition, Characteristics & Types||Define the features and the importance of crustaceans, centipedes and millipedes and arachnids.|
|Insects: Characteristics, Behavior & Extermination||Explain the characteristics, food sources, reproduction and life cycles of insects; describe their importance and the efforts to control them.|
1. Animal Body Plans: Classifications and Features
The Animal Kingdom is diverse and complex. How do we make sense of it all? Scientists use body plans to classify and organize the animals of Earth, making it much easier to differentiate between them.
2. Invertebrates: Definition & Examples
From bees to lobsters and octopi to cockroaches, invertebrates are everywhere. This lesson introduces them as a major group within biology and discusses their relationship with the human race.
3. Ocean Invertebrates: Sponges & Cnidarians
While some may call them simple, sponges and cnidarians have some amazing abilities. This lesson tells the story these ocean invertebrates, ranging from sponges to coral to jellyfish.
4. Worms: Types & Features
You may not know this, but worms are everywhere. Many are so tiny that we can't see them crawling all over the place like we can earthworms. In this lesson, we'll learn about some of the different types of worms around us.
5. Mollusks: Characteristics & Types
Do you like to eat seafood, hunt for seashells, or learn about scary sea creatures? If so, then you'll want to learn about the different types of mollusks, which include the tasty bivalves, the cool-looking gastropods, and the weird cephalopods.
6. Echinoderms: Traits, Types & Roles
After watching this lesson, you'll be well on your way to being an echinoderm expert! For example, you'll learn that sea cucumbers help clean up the ocean floor and that starfish can grow back any arms that are broken or damaged.
7. Arthropods: Definition, Characteristics & Types
Arthropods are the most abundant animals on the planet. They fly, jump, swim, and crawl over just about every inch of the world. Learn about common types of arthropods and the characteristics they have in common.
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Other chapters within the Life Science: Middle School course
- Introduction to Life Science
- Characteristics & Chemicals of Life
- The Parts of Cells
- DNA Replication & Mutation
- Cell Division & the Cell Cycle
- How Living Organisms Get Energy
- Classification of Organisms
- The Origin & History of Life On Earth
- Genetics & Hereditary Traits
- Genetic Engineering Basics
- Natural Selection & Evolution in Life Science
- Microbiology & Types of Microbes
- Introduction to Ecosystems
- Types of Ecosystems
- Changing Ecosystems
- Birds & Mammals
- Animal Behavior & Communication
- Mammal Reproduction & Development
- The Respiratory System
- The Cardiovascular System
- The Blood Vessels
- The Digestive System
- The Urinary & Endocrine Systems
- The Brain & Nervous System
- The Muscular System
- The Skeletal System & Connective Tissue
- Sight, Hearing & Other Senses
- Health Issues & Concerns
- Plant Biology & Structure
- How Plants Grow & Reproduce
- Environmental Concerns
- Natural Resources
- Earth History & Geologic Time