porifera/cnidaria

What type of symmetry do sponges (Porifera) have?

• asymmetrical
• radial
• bilateral 
• medial

What habitat can sponges (Porifera) be found or inhabit?

• saltwater and freshwater
• terrestrial 
• rainforest
• artic

The elastic fibrous protein found in sponges is called .....

• mesohyl
• spicules
• spongin
• tissue

What level of organization cnidarians have is...

• specialized cells
• tissues
• organs
• organ systems

What type of symmetry do cnidarians have

• asymmetrical
• bilateral
• radial

Tags

NGSS.MS-LS4-2

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.
• An incomplete digestive tract consisting of one opening.

Which of the following is the correct description of the nervous system of Cnidarians?

• individual cellular response
• concentration of nerve cells at one end
• cerebral ganglia connected to a nerve cord
• a nerve net with sense organs for light detection and balance

What is the body plan of Cnidarians?

• Asymmetrical
• Bilateral
• Radial

Which of the following is a correct description of the polyp body form?

• It is sessile and the tentacles and mouth point downward.
• It is sessile and the mouth and tentacles point upward.
• It is mobile and the tentacles and mouth point downward.
• It is mobile and the tentacles and mouth point upward.

What are the organelles inside the stinging cells that inject paralyzing toxins into their prey?

• pinacocytes
• lysomatocyts
• choanocytes
• nematocysts