Invertebrates

Invertebrates

Animals are often identified as being either invertebrates or vertebrates. These are terms based on the skeletons of the animals. Vertebrates have a backbone made of bone or cartilage. Invertebrates, on the other hand, have no backbone.

CK-12 (Middle School)

ESSENTIAL QUESTION:

What do all invertebrates have in common?
STANDARDS:
RST.2 - Main Ideas

DEPTH OF KNOWLEDGE (DOK) LEVELS:

2
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