Coral
Jellyfish
Anemone
Other
100

This is a requirement of photosynthesis that coral reefs need due their photosynthesizing symbionts.

What is sunlight?

100

Jellyfish exchange gases: they emit ____ and diffuse ____ . 

What is CO2 and O2.

100

This organism has a protective coating that protects them from the stinging cells of the sea anemones in which they inhabit.

What is clownfish?

100

All cnidarians -- coral, jellyfish, and anemones -- all share this defense mechanism.

What are stinging cells?

200

The beneficial relationship between coral and zooxanthellae is known as...

What is symbiosis?

200

True or False: The medusa (bell shaped body) of the jellyfish provides protection.

What is false?

200

The characteristic that these organisms share with others in its phylum.

What is stinging cells?

200

The individual organisms (the coral animals) that make up coral and anemones have a basic structure called...

What is a polyp?

300

One type of coral that is a stony (hard) coral.

What is Brain OR Staghorn or Star?

300

A simple network of neurons that allow jellyfish to respond to external stimuli.

What is a nerve net?

300

The mechanism sea anemone's use to capture food (similar to that of jellyfish).

What is stinging cells/nematocysts?

300

Name one type of soft coral.

What is Whip OR Sea Fan or Plume?

400

The name of the symbiotic photosynthesizing organism that lives inside the tissues of coral.

What is zooxanthellae?

400

The inner layer of jellyfish.

What is the gastrodermis?

400

The body plan that anemones share with the animals that live inside coral.

What is polyp?

400
The stinging cells inside the tentacles cnidarians.

What are nematocysts?

500

Name one substance coral need from their environment to produce their hard limestone exoskeleton.

What is calcium carbonate or carbon dioxide?

500

Refers to the umbrella-shaped body plan of jellyfish.

What is medusa?

500

Anemone's sense stimui similarly to jellyfish due to this simple nervous system network that they share.

What is a nerve net?

500

Cniderians consist of four subgroups: the Scyphozoa (jellies), the Cubozoa (box jellies), the Anthozoa (sea anemones), and Hydrozoa known as _________ .

What are hydroids?