Echinoderms

Echinoderms

Echinoderms show radial symmetry. Other key echinoderm features include an internal skeleton and spines, as well as a few organs and organ systems.

CK-12 (Middle School)

ESSENTIAL QUESTION:

What characteristics distinguish echinoderms from other invertebrates?
STANDARDS:
RST.1 - Analysis & Evidence, RST.2 - Main Ideas

DEPTH OF KNOWLEDGE (DOK) LEVELS:

1,2
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