Taxonomy and Systematics of Phylum Cnidaria

Question 1

Metridium farcimen

Answer 1

Sea anemones, corals

Question 2

Aurelia aurita

Answer 2

cup jellyfish

Question 3

Chironex fleckeri

Answer 3

cube jellyfish

Question 4

Hydra canadensis

Answer 4

Other jellyfish

Question 5

Physalia physalis

Answer 5

Polyps

Question 6

Class Anthozoa means flower, why?

Answer 6

They have sea anemones and corals in the class and they are flower like.

Question 7

Class Scyphozoa means what? Give an example

Answer 7

Class Scyphozoa means cup for cup jellyfish

Question 8

Class Hydrozoa has what type of species associated with it?

Answer 8

Other jellyfish and polyps, e.g. Hydra canadensis and Physalia physalis

Question 9

Stobliation and oral arms is in which class?

Answer 9

Class Scyphozoa

Question 10

Class Cubozoa and Class Scyphozoa have what in common?

Answer 10

Medusa form dominant

Question 11

Cnidoctyes are only on the tentacles in which class(es)?

Answer 11

Class Scyphozoa, Class Cubozoa, and Class Hydrozoa

Question 12

Class Cubozoa has what unique to them?

Answer 12

A tetrahedral body and unique cytolytic venom

Question 13

Septae/mesentaries in gut, siphonoglyph and either hexa or octoradial symmetry is in which class?

Answer 13

Class Anthozoa

Question 14

Class Anthozoa, Class Scyphozoa, Class Cubozoa, and Class Hydrozoa all share which features?

Answer 14

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

Question 15

Which class has polyps without septae?

Answer 15

Class Hydrozoa

Question 16

Class Hydrozoa has which features?

Answer 16

Polyps without septae and medusae with velum

Question 17

7000 species

Answer 17

Class Anthozoa

Question 18

2700 species

Answer 18

Class Hydrozoa

Question 19

190 species

Answer 19

Class Scyphozoa

Question 20

10 species

Answer 20

Class Cubozoa