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Symmetry None (0) Radial ( 5) Bilateral (2) # Tissue layers 0, 1, 2, 3 Digestive

ID: 175873 • Letter: S

Question

Symmetry

None (0)

Radial ( 5)

Bilateral (2)

# Tissue layers

0, 1, 2, 3

Digestive system

Complete, incomplete,

or not applicable

(C , I, or N/A)

Fate of blastopore

Mouth (M)

Anus (A)

Not applicable (NA)

Anemone

Common name Phylum Class

Symmetry

None (0)

Radial ( 5)

Bilateral (2)

# Tissue layers

0, 1, 2, 3

Digestive system

Complete, incomplete,

or not applicable

(C , I, or N/A)

Fate of blastopore

Mouth (M)

Anus (A)

Not applicable (NA)

Coelom development Not applicable (NA), acoelomate (A), pseudocoelomate (P), true coelom ( C) Circulatory system Absent (A) Open (O) Closed (C ) Skeleton Absent (A) Hydrostatic (H) Exoskeleton (Exo) Endoskeleton (Endo) Sponge Hydra

Anemone

Coral Rotifer(bdelloid) Liver Fluke Tapeworm Clam Snail Octopus Chiton Tusk Shell Marine Worm Earthworm Leech Dog Roundworm Vinegar Eel Millipede Centipede Grasshopper Spider Tick Mite Scorpion Horshoe Crab Crayfish Barnacle Starfish Acorn Worm Shark Perch Frog Lizard Sparrow Mouse

Explanation / Answer

1. SPONGE, HYDRA - PORIFERA phylum - CALCAREA, DEMOSPONGIA class - 0 symmetry - 0 tissue layers - NA digestive system - NA fate of blastophore - NA coelom - A circulatory system - A skeleton

2. ANEMONE and CORALS - CNIDARIA - 2 tissue layers - RADIAL symmetry - NA circulatory system, digestive system - A skeleton

3. TAPEWORM - PLATYHELMINTHES phylum - 3 tissue layers - BILATREAL symmetry - NA circulatory and nervous system

4. SNAIL, OCTOPUS, CLAMS - MOLLUSCA phylum - 3 tissue layers - BILATERAL symmetry - present circulory sysytem and nervous system.

5. EARTHWORM, NEEEREIS - ANNELIDA

6. STAR FISH - ECHINODERMATA

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