Invertebrate Phylogeny

Who am I? I am a protostome invertebrate with a segmented body and I have an exoskeleton made of chitin. I undergo metamorphosis, and my four major lineages include arachnids, crustaceans, millipedes, centipedes and insects.

• Cnidarians

• Echinoderms

• Flat worms

• Arthropods

Tags

NGSS.MS-LS4-2

Who am I? I have radial symmetry and I can have a polyp or medusa form. I am a carnivore since I prey upon marine organisms using cnidocysts.

• Sponges

• Cnidarian

• Mollusk

• Arthropod

Tags

NGSS.MS-LS4-2

Who am I? I include the planaria, tapeworms and flukes in my group. I am hermaphroditic and have no body cavity.

• Flat worms

• Round worms

• Segmented worms

• cnidarians

Tags

NGSS.MS-LS4-2

Who am I? I am a deuterostome and my body is enclosed by a hard skeleton under spiny skin. My larvae are bilaterally symmetrical, but as an adult, I have radial symmetry. My undersides are covered with tube feet. I am more related to humans than any other group of invertebrates.

• Cnidarians

• Echinoderms

• Arthropods

• Cephalopods

Tags

NGSS.MS-LS4-2

Who am I? I am also known as nematodes and are the most abundant animals on earth. I grow by molting and can cause may diseases such as Elephantiasis.

• Flat worms

• Round worms

• Segmented Worms

• Cnidarians

Tags

NGSS.MS-LS4-4

Who am I? I have no tissues, I feed by pumping water through pores then use collar cells to trap food particles and move water. I have free swimming larvae, but I am sessile as an adult.

• Sponge

• Cnidarian

• cnetophyte

• echinoderm

Who am I? I include the marine polychaetes, the terrestrial oligochaetes and the leeches. I have grooves running around my body separating my divisions.

• Flat worms

• Round worms

• Segmented worms

• Cnidarians

Who am I? I include gastropods, cephalopods and bivalves. I have defined tissues, bilateral symmetry, am a protostome, contain a mantle and use a radula. Many in my group live in shells.

• Cnidarians

• Echinoderms

• Mollusks

• Round worms

Tags

NGSS.MS-LS4-2