Biology 202 Test 3- Cnidaria

Front 1

The adult body of a Cnidaria is ________.

Back 1

diploblastic

Front 2

What are cnidocytes used for in jellyfish?

Back 2

prey capture and predator protection

Front 3

What is a nematocyst?

Back 3

it is a cnidocyte that is present in the tentacles used for prey capture and self defense

Front 4

What does a Rhopalium in jellyfish do?

Back 4

It is a sense organ that houses chemoreceptors, statocysts, and ocelli

Front 5

What is the scientific name for the "true jellyfish"?

Back 5

Scyphozoans

Front 6

What is a freshwater polyp called?

Back 6

a hydra

Front 7

What are the 5 species of Cnidaria?

Back 7

1. Anthozoa
2. Staurozoa
3. Scyphozoa
4. Cubozoa
5. Hydrozoa

Front 8

The class Anthozoa has no ____________ stage?

Back 8

medusa

Front 9

What two types of marine organisms are Anthozoa?

Back 9

Sea Anemones and Stony Corals

Front 10

The Octocorallia Subclass of Anthozoa contains what 3 organisms?

Back 10

1. Soft Corals
2. Sea fans/whips
3. Sea pens

Front 11

What are the 2 main subclasses of Anthozoa?

Back 11

Hexacorillia (multiples of 6) and Octocorallia (8)

Front 12

What are some defining features of the Class Staurozoa (5)

Back 12

1. live in cold shallow waters
2. solitary
3. no medusa stage
4. polyps with 8 tentacles fishing in great nematocyst clusters
5. crawling larvae

Front 13

What is the class Schyphozoa known unofficially as?

Back 13

the large jellyfish

Front 14

What are 4 characteristics of the Cubozoa?

Back 14

1. mostly small
2. live in tropical waters
3. about 25 species
4. cubed head with 4 pedalia

Front 15

The Man-O-War belongs to which Cnidaria class?

Back 15

Hydrozoa

Front 16

What are 6 characteristics of the Ctenophora (aka "comb jellies")?

Back 16

1. 8 rows of comb-like silia
2. most are platonic
3. they are predators
4. they have colloblasts (adhesive cells for prey capture)
5. they are hermaphrodites
6. cydippid larva