Phylum Cnidaria

Cnidarians live in which type(s) of habitat(s)? (Select all that apply.)

• Terrestrial

• Marine

• Fresh Water

What kind of symmetry does a Cnidarian have?  

• No Symmetry 
• Bilateral Symmetry 
• Radial Symmetry 
• Square

All cnidarians have tentacles that contain _____, which are used to capture prey.

• cnidocytes

• radial

• nematocysts

• medusa

Which of the following is a correct description of the Cnidarian digestive tract?

• A complete digestive tract consisting of two openings.
• A complete digestive tract consisting of one opening
• An incomplete digestive tract consisting of two openings.
• contains only a mouth and an internal cavity.

How do cnidarians reproduce?

• sexually only
• asexually only 
• both sexually and asexually
• neither sexually or asexually

Tags

NGSS.MS-LS3-2

Which class of cnidarians is the second most diverse class with over 3,000 described species?

• Anthozoa

• Cubozoa

• Hydrozoa

• Scyphozoa

• Staurozoa

Tags

NGSS.MS-LS4-2

Which class of cnidarians secrete a calcium carbonate “skeleton” that forms reefs?

• Anthozoa

• Cubozoa

• Hydrozoa

• Scyphozoa

• Staurozoa

Which class of cnidarians is newly recognized?

• Anthozoa

• Cubozoa

• Hydrozoa

• Scyphozoa

• Staurozoa

Tags

NGSS.MS-LS4-2

Which class of cnidarians contains organisms that do not undergo alternation of generations and exist exclusively in the polyp form?

• Anthozoa

• Cubozoa

• Hydrozoa

• Scyphozoa

• Staurozoa

Which class of cnidarians appear polyp-like, but but have internal anatomy that is medusa-like?

• Anthozoa

• Cubozoa

• Hydrozoa

• Scyphozoa

• Staurozoa

Tags

NGSS.MS-LS4-2