Porifera and Cnidaria

Class that contains jellyfish

A long, slender, flexible arm-like structure found around the mouth or head of an animal

Phylum that is set apart from all the others due to its lack of tissue

Class of Porifera whose spicules are composed of calcium carbonate

Most species of Porifera reproduce by

Extremely venomous species found in the region of tropical Australia

The top, usually round part of a jellyfish that usually is safe to touch

Method of obtaining food by filtering small particles out of the water.

Class that contains the Porugese man-of-war

The innermost embryonic layer

Mouth-like opening at the top of a sponge

Main layers that form the various tissues and organs of an animal body

Cells that house (hold) the nematocyst

Found in the cnidocyte of cnidarians only, a specialized coiled thread that when discharged can penetrate the prey

Phylum of the animal kingdom that includes jellyfish, anemone, and coral

Class that contains Sea Anemones and coral

Class of Porifera that have spicules composed of spongin fiber, silica, or both

Often mistaken as a jellyfish but really a colony of Hydrazoids

Production of ova and sperm released out of the gastrovascular cavity into the water

Digestive cavity with a single opening, in which Cnidarians digest food and release gametes

Opening to the gastrovascular cavity

Symmetry in which the organism has an irregular shape or outline

A jelly-like substance between the inner layer and outer layer of cells in a cnidarian

Occurs when a coral becomes stressed and expels most of its colorful algae, leaving a white skeleton

An algae that forms an endosymbiotic relationship with corals and performs photosynthesis

Which of the following is an asexual method of reproduction in Cnidarians?

Organisms that have 2 germ layers

Which of the following is FALSE

System of connected neurons that control the movement of cnidarians but with no organizing center

Class of porifera that have spicules of silica joined together to form a netlike skeleton 

Organisms that attach to a surface, no -moving

Organisms that can be cut in half into two identical halves by ANY axis that passes through its center

A free-swimming cnidarian with a bell-shaped body and tentacles that hang downward

Amoeba-like cells that can secrete spicules, the support structures of sponges

The outermost embryonic germ layer