I have a digestive cavity with one opening, and have tentacles.  I am a hydra.

• Echinoderm
• Cnidarian
• Arthropod
• Mollusk

Which phylum is mainly asymmetrical?

• cnidaria
• porifera (sponges)
• echinodermata
• arthropoda

These organisms all have nematocysts.

• cnidaria
• mollusca
• arthropoda
• porifera

What filters food and eliminates waste from the water it lives in?

• sponge
• segmented worm
• arthropod
• mollusk

Sponges use pores to 

• move from place to place.
• filter food from the water.
• defend themselves.

Cnidarians have what kind of symmetry?

• Radial
• Bilateral
• Asymmetrical

Nematocysts (stinging cells) are used for...

• Defense
• Catch organisms for food
• Both of these

Cnidarians use _______ to sting their prey.

• red blood cells
• cysts
• nematocysts
• setae

Sponges are members of the ________ Kingdom.

• Animal
• Larva
• Porifera
• Sessile

Which of these is a picture of a choanocyte?

• 
• 
• 
• 

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2