Synapomorphies of Phylum Cnidaria

Question 1

Synapomorphies of Phylum Cnidaria include:

Answer 1

Cnidocytes and nematocysts
Medusa and polyp life stages
Diploblastic with mesoglea
Epitheliomuscular cells
Planula larva

Question 2

Class Anthozoa examplar

Answer 2

Metridium farcimen

Question 3

Synapomorphies of Class Anthozoa

Answer 3

Septae/mesentaries in gut
Siphonoglyph
Hexa- or octa-radial symmetry

Question 4

A characteristic of Class Anthozoa includes what?

Answer 4

Medusa stage reduced of absent
Solitary or colonial
Many hermatypic

Question 5

Octoradial corals in Class Anthozoa makes what type of corals?

Answer 5

Soft corals because they DON’T form calcium carbonate skeletons

Question 6

Which coral types creates stony corals?

Answer 6

Hexacorals

Question 7

Mostly hermatypic and forms calcium carbonate skeletons are what type of corals?

Answer 7

Hexacorals

Question 8

Class Scyphozoa example

Answer 8

Aurelia aurita

Question 9

Cup jellyfish is an example of…?

Answer 9

Class Scyphozoa

Question 10

Synapomorphies of Class Scyphozoa (e.g. Aurelia aurita) include:

Answer 10

Strobilation

Oral arms

Question 11

Class Cubazoa examplar:

Answer 11

Chironex fleckeri (i.e. cube jellyfish)

Question 12

Class Scyphozoa has a reduced or absent what?

Answer 12

Polyp stage

Question 13

Tetrahedral body form and unique cytolytic venom are the synapomorphies of what class?

Answer 13

Class Cubozoa

Question 14

Solitary and polyp stage reduced or absent can refer to which type of jellyfish class?

Answer 14

Class Scyphozoa and Class Cubazoa

Question 15

Hydra canadensis is from which class?

Answer 15

Class Hydrozoa

Question 16

Synapomorphies of Class Hydrozoa (e.g. Hydra canadensis) include:

Answer 16

Polyps without septae/mesenteries

Medusae with velum

Question 17

Marine and fresh water jellyfish

Answer 17

Class Hydrozoa

Question 18

Both medusa and polyp forms expressed in this class

Answer 18

Class Hydrozoa

Question 19

Is the Class Hydrozoa solitary or colonial?

Answer 19

Can be both