Ultimate Phylum Cnidaria Review

What animals are included in the Phylum Cnidaria?

• Hydras, siphonophores, portuguese man-of-war

• Sea anemones, sea pens & coral reefs

• Box jellies

• True jellyfish

• All of these

The two germ layers found in cnidarian embryonic development are....

• Mesoglea

• Ectoderm

• Endoderm

• Mesoderm

Tags

NGSS.MS-LS4-3

The jellylike substance that separates the two germ layers is called ______

• Mesoglea

• Ectoderm

• Endoderm

• Mesoderm

Unlike poriferans, cnidarians develop two germ layers during their embryological development. The term for this is _______

• Monoblastic

• Diblastic

• Diploblastic

• Triploblastic

• Quadroblastic

What type of body symmetry is seen in cnidarians?

• Asymmetry

• Bilateral symmetry

• Medial symmetry

• Radial symmetry

The _______ is the body plan that is bell-shaped and free-living

• Polyp

• Medusa

The _______ body plan consists of a tubular body with a base at one end and tentacles at the other end

• Polyp

• Medusa

In the ____ body plan, the mouth & tentacles points downward. In the ____ body plan, the mouth & tentacles points upward.

• Polyp; medusa

• Medusa; polyp

• Medusa; medusa

• Polyp; polyp

In cnidarians, the outermost layer of cells is called the ____

• Epidermis

• Endodermis

• Skin

• Gastrodermis

In cnidarians, the innermost layer of cells is called the ____

• Mesoglea

• Organ lining

• Ectodermis

• Gastrodermis