Cnidaria and classes
Species
Life Cycle
Anatomy
Fun Facts
100

What is a Cnidaria?

An aquatic invertebrate that has radial symmetry and most have stinging cells
100

How big is the Immortal Jellyfish?

about a finger tip length
100

What is it called when the baby jellyfish cannot move?

Sessile

100

What are three species of jellyfish that can glow in the dark?

Comb jellyfish, Atolla jellyfish, and Crystal jellyfish

100

What kind of symmetry do jellyfish have?

Radial Symmetry

200

What animals are in the class Anthozoa?

Sea anemones and coral

200

What is the most venomous type of jellyfish?

Box Jellyfish

200

What is the adult form of a jellyfish?

Medusa

200

Are jellyfish vertebrates or invertebrates?

Invertebrates

200

What animal is not usually able to get stung by a jellyfish?

Turtles

300

What class are hydras apart of?

Hydroza

300

What species represents soft coral?

Upside-down Jellyfish

300

What is the younger stage of a jellyfish called?

Polyp

300

What “vital” organs do jellyfish lack?

A brain, heart, lungs

300

What animal could jellyfish be older than? Why?

Dinosaurs; Jellyfish can regenerate and bud so part of them will always be living.

400

What is the main difference between the class Cubozoa(box jellyfish) and Scyphozoa?

The box jellyfish has a box shaped bell and the other jellyfish have a rounded, saucer-shaped bell

400
About how many jellyfish species have been discovered?

approximately 2,000 

400

How do jellyfish reproduce?

Sexually

400

About what percent of jellyfish is water?

About 95%

400

What are jellyfish able to do if they are cut in half?

Regenerate the missing piece

500

What are the three types of coral that are Cnidarians?

Sea pen, sea anemone, and sea fans

500
What type of jellyfish has the longest tentacles?

The Lion‘s Mane Jellyfish(100 feet or more)

500

At what stage does a jellyfish become motile?

Medusa stage

500

What is the inner, outer, and and middle layer of a jellyfish called

Inner- gastrodermis

Outer- epidermis

Middle- mesoglea

500
Why have jellyfish been to space?

In 1994, jellyfish were sent to space by NASA to test how microgravity affects their sense of balance