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Invertebrates are animals

• with a backbone
• without a backbone

What am I?

• Mollusk
• Annelid
• Arthropod
• Cnidarian

What am I?

• Arthropod
• Cnidarian
• Mollusk
• Porifera

I am an arachnid, have four pairs of legs, and a body with two sections.

• Echinoderm
• Arthropod
• Annelid
• Porifera

I am spiny, have a water vascular system with tube feet, radial symmetry, and am called a brittle star.

• Mullosk
• Arthropod
• Echinoderm
• Cnidarian

I have a round body divided into segments and my digestive tract has two openings.

• Echinoderm
• Cnidarian
• Annelid
• Mollusk