Cnidaria

Which of the following is NOT a class within the phylum Cnidaria?

• Anthozoa

• Scyphozoa

• Mollusca

• Cubozoa

What type of symmetry do Cnidarians exhibit?

• Bilateral symmetry

• Radial symmetry

• Asymmetry

• Spiral symmetry

Which class within the phylum Cnidaria includes jellyfish?

• Anthozoa

• Scyphozoa

• Hydrozoa

• Cubozoa

What is the layer of jelly that separates the two tissue layers in cnidarians called?

• Mesoglea

• Mesoderm

• Mesophyll

• Mesentery

What are the two body forms that cnidarians can take?

• Polyp and medusa

• Larva and adult

• Nymph and imago

• Caterpillar and butterfly

What are the stinging structures on cnidarian tentacles called?

• Nematocysts

• Nephridia

• Nematodes

• Neurons

What are the special cells that compose the stinging structures in cnidarians?

• Cnidocytes

• Chloroplasts

• Chromatophores

• Chondrocytes

What is the largest class in phylum Cnidaria?

• Anthozoa

• Hydrozoa

• Scyphozoa

• Cubozoa

What type of organisms are included in class Anthozoa?

• Jellyfish and sea turtles

• Corals and anemones

• Starfish and sea urchins

• Sharks and rays

What is the relationship between anemones and clownfish?

• Anemones eat clownfish

• Clownfish protect anemones from predators

• Anemones provide protection to clownfish

• Clownfish clean anemones