2
Invertebrate Phyla
What do you think?
LESSON
LESSON INTRODUCTION
Get Ready
Before you begin, decide if you agree or disagree with each of these statements.
As you view this presentation, see if you change your mind about any of the statements.
2
Invertebrate Phyla
Do you agree or disagree?
Get Ready
LESSON
LESSON INTRODUCTION
2
Invertebrate Phyla
Key Concepts/Essential Questions
LESSON
LESSON INTRODUCTION
2
Invertebrate Phyla
Vocabulary
Watch out for these words!
LESSON
LESSON INTRODUCTION
2
Invertebrate Phyla
How did it get there?
Look at the photo at the beginning of the lesson. This octopus is alive and got inside the bottle by slowly pushing its soft, flexible body inside. Like many invertebrates, an octopus does not have a skeleton made of bone or other hard structures.
LESSON
LESSON INTRODUCTION
2
Invertebrate Phyla
LESSON
Most animals have backbones.
2
Invertebrate Phyla
Disagree. Most animals are classified as invertebrates, which do not have backbones.
Do you agree or disagree?
Lesson Review
LESSON
LESSON WRAP-UP
Do you agree or disagree?
All worms belong to the same phylum.
2
Invertebrate Phyla
Disagree. Worms are classified into three different phyla—roundworms, flatworms, and annelids.
Do you agree or disagree?
Lesson Review
LESSON
LESSON WRAP-UP
Do you agree or disagree?
What are the characteristics of invertebrates?
2
Invertebrate Phyla
Invertebrates have no backbone or internal skeleton, and they tend to be smaller and slower-moving than vertebrates.
Key Concept/Essential Question Review
LESSON
LESSON WRAP-UP
How do the invertebrate phyla differ?
2
Invertebrate Phyla
Invertebrates differ based on symmetry, presence or absence of certain types of specialized body structures, and presence or absence of specific internal organs and organ systems.
Key Concept/Essential Question Review
LESSON
LESSON WRAP-UP