Cnidarian

Medusa and polyp are the two main body plans for Cnidarians.

• True

• False

The stinging cells found in the tentacles of Cnidarians are called

• Nematocysts

• Radular teeth

• Cilia

• Rhopalia

Which includes ONLY members of the phylum Cnidaria?

• Hydra, jellies, coral, clams

• Sea anemones, jellies, corals, hydra

• Jellies, squid, corals, snails

• Corals, hydra, jellies, sea slugs

Tags

NGSS.MS-LS4-2

How do jellies use rhopalia?

• Rhopalia help jellies take in water for their water skeleton.

• Rhopalia allow jellies to digest food they catch.

• Rhopalia help jellies concentrate oxygen gas from the water.

• Rhopalia help jellies sense conditions and organisms around them.

Why do corals and zooxanthellae need each other?

• The algae give the coral energy to build their skeletons.

• The coral give the dinoflagellates safety.

• The waste products of the coral are used by the symbiont microorganisms for photosynthesis. 

• All of these

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

How are colonial corals able to share nutrients?

• They float the nutrients in the water to one another.

• They pass the nutrients through their coenosarcs.

• The nutrients pass through the zooxanthellae.

• The nutrients pass on mucus nets.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

How do sea anemones reproduce?

• Spawning

• Budding

• Binary fission

• All of these

What mechanisms do sea anemones have to protect themselves from predators and rival anemones?

• Nematocysts in their tentacles

• Some can swim away

• Some are sticky so when they pull in their tentacles they camouflage and protect themselves with sand and pebbles.

• A & C

  only

• All of these

Which correctly completes the sentence: 

Adult jellies ____________ and adult sea anemones _____________ .

• have the polyp body plan

  also have the polyp body plan

• have the medusa body plan

  also have the medusa body plan

• have the polyp body plan

  have the medusa body plan

• have the medusa body plan

  have the polyp body plan

Which is true of jellies?

• They are holoplankton.

• They are mollusks.

• They are producers.

• They are herbivores.