Phylum Cnidaria

Capable of movement

• Motile

• Medusa

• Diffusion

• Nerve Net

Symmetry about a central axis

• Chemoreceptors

• Bilateral symmetry

• Asymmetry

• Radial symmetry

In cnidarians, a stinging cell that is used to inject a toxin into prey

• Nematocyst

• Symbiosis

• Statocysts

• Neurotoxin

A cnidarian body plan characterized by a bowl shape and adapted for a free-swimming life.

• Symbiosis

• Monoecious

• Medusa

• Nematocyst

What is the ciliated, free swimming larvae that may metamorph into a polyp?

• larva

• planula

• parenchymula

• ephyra

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 cnidocyte stinging cells that inject paralyzing toxins into their prey?

• pinacocytes
• lysomatocyts
• choanocytes
• nematocysts

Tags

NGSS.MS-LS1-2

What surrounds the mouth of Cnidarians?

• guard cells
• pinococytes
• tentacles
• spines

A cnidarian gathers it's food by

• filtering it through pores
• paralyzing it with venom
• bringing it into the osculum
• killing it with spikes

Cnidocytes

• used for digestion

• stinging cells of cnidarians

• used to propel cnidarians

• another word for tentacles