Porifera and Cnidaria

What type of symmetry do most sponges (Porifera) have?

• asymmetrical

• radial

• bilateral

• medial

The level of cellular organization cnidarians have is...

• tissues

• organs

• organ systems

What type of symmetry do cnidarians have?

• asymmetrical

• radial

• bilateral

• medial

The hard "skeleton" structures in a sponge are called...

• Spongin

• Spicules

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

• A complete digestive tract consisting of two openings.

• An incomplete digestive tract consisting of one opening.

What phylum has two different body forms that exist called the medusa and the polyp?

• Phylum Porifera

• Phylum Cnidaria

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

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

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

Cnidarians can reproduce...

• sexually only

• asexually only

• both sexually and asexually

What kingdom do invertebrates such as the Porifera and Cnidaria belong?

• Plantae

• Porifera

• Animalia

• Fungi

Porifera and Cnidaria can reproduce asexually through a process called...

• replication

• fission

• budding