Chapter 13: Class Scyphozoa

Question 0

Primary mode of mobility in ocean?

-exception?

Answer 0

• float

- but one order is sessile, attached to seaweed via stalk

Question 1

Size wise what kind of jellyfish belong to this?

Answer 1

-large types

Question 2

Shape of bell?

-composition?

Answer 2

vary in shape and size….made up of mostly mesoglea!

Question 3

Velum is found in what kind of medusae?

Answer 3

hydrozoan! 
-this class lacks the velum!

Question 4

The margin of the umbrella has indentations bearing what?

Answer 4

a pair of lappets

Question 5

Between the lappets is a rhopalium…what is its function?

statocyst?

Answer 5

• equilibrium sense organ

- contains a hollow statocyst

Question 6

Where is the mouth located?

Answer 6

beneath the umbrella

Question 7

The Manubrium forms four what?

Answer 7

-oral arms which capture and ingest prey

Question 8

Nematocysts are located where on scyphozoa?(3)

Answer 8

-tentacles, manubrium and often the entire body

Question 9

Nervous System consists of??

Answer 9

nerve net…

Question 10

Sexes are??

Answer 10

separate

Question 11

Fertilization is ___________ in the _________ pouch of the female.
Zygote develops into a ciliated _______.
This than attaches and develops into a _______.
This then undergoes_________.
Which forms buds called _____ that break loose from jellyfish medusae.

Answer 11

• internal, gastric
• planula larva
• scyphistoma
• strobilation
• ephyrae