Cnidaria and Porifera Review

What is the outer most layer of Porifera?

• epidermis
• gastrodermis
• endodermis
• mesoglea

What type of symmetry do cnidarians have

• 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

What surrounds the mouth of Cnidarians?

• guard cells
• pinococytes
• tentacles
• spines

Which part of the sponge body is a large opening at the top of the central cavity through which water leaves the sponge?

• Ostia
• Meenchyme
• Spongecoel
• Osculum

Many cnidarians feature 2 body forms, the asexual ____________, and the sexual _____________.

• blastula, planula
• medusa, polyp
• planula, blastula
• polyp, medusa

What is this organism?

• jellyfish
• Portuguese man-of-war
• hydra
• coral

Sea anemones have a symbiotic relationship with

• algae
• clown fish
• colonies

Tags

NGSS.MS-LS2-2

A cnidarian captures its prey by

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