Identification of Invertebrates

I have a soft-body, a hard shell, and live on land and water. Often times I have a muscular foot and a mantle. What phylum do I belong to?

• Mollusca

• Arthropoda

• Echinodermata

• Porifera

I have a round body divided into segments and my digestive tract has two openings. I am vital to soil fertility. What phylum do I belong to?

• Nematoda

• Arthropoda

• Annelida

• Platyhelminthes

I have a digestive cavity with one opening, radial symmetry, and tentacles. I am a hydra. In what phylum am I placed?

• Echinodermata

• Cnidaria

• Porifera

• Mollusca

I have jointed appendages and a body divided into two sections. I have an exoskeleton composed of chitin. What phylum do I belong to?

• Echinodermata

• Mollusca

• Nematoda

• Arthropoda

I have a cavity with one opening and have true tissues. I am coral. In what phylum am I?

• Mollusca

• Arthropoda

• Echinodermata

• Cnidaria

I am spiny and have a water vascular system with tube feet. I am a sea cucumber. What phylum do I belong to?

• Cnidaria

• Echinodermata

• Mollusca

• Annelida

I am sessile, asymmetrical, and lack true tissues. What phylum do I belong to?

• Porifera

• Rotifera

• Ctenophora

• Nemertea

I lack a true body cavity and am flat. What phylum do I belong to?

• Annelida

• Platyhelminthes

• Rotifera

• Nematoda

I am bilaterally symmetrical, typically parasitic, and often known as a roundworm. What phylum do I belong to?

• Platyhelminthes

• Nematoda

• Annelida

• Echinodermata

I have a hard exoskeleton, a segmented body, pairs of jointed appendages, and live on land and water. I am a crab. What is my phylum?

• Mollusca

• Arthropoda

• Echinodermata

• Cnidaria