Jellyfish Quiz

What is unusual about the anatomy of a jellyfish?

• It has a brain and bones.

• It has no brain, no bones, and no circulatory system.

• It has a complex nervous system.

• It has a hard shell.

Why is the term "jellyfish" considered inaccurate?

• They are made of jelly.

• They are actually fish.

• They are invertebrates and not made of jelly.

• They have backbones.

Approximately how many types of jellyfish are believed to exist?

• 500

• 1,000

• 2,000

• 3,000

What percentage of a jellyfish's body is composed of water?

• 50-60%

• 70-80%

• 85-90%

• 95-99%

What are the stinging cells on a jellyfish's tentacles called?

• Nematocysts

• Photocytes

• Chromatophores

• Cnidocytes

How do jellyfish primarily move through the water?

• By swimming with fins

• By contracting muscles in the main part of the body

• By crawling on the ocean floor

• By using their tentacles to paddle

What is the primary way jellyfish are transported in the ocean?

• By swimming rapidly

• By ocean currents and the wind

• By attaching to larger animals

• By walking on the ocean floor

What is the typical shape of a jellyfish when viewed from the top?

• A star

• A cube

• An umbrella or a mushroom

• A triangle

What is the main function of a jellyfish's tentacles?

• To help them swim faster

• To capture food such as small fish and plankton

• To protect them from predators

• To communicate with other jellyfish

What should you look for if you want to see a jellyfish at the beach?

• A colorful fish swimming near the shore

• A large rock formation

• A colorless blob floating on the water’s surface

• A group of seaweed