Simple Triploblasts

Question 1

What are lophophores?

Answer 1

mobile feeding structure for immobile animals

Question 2

What is a trochophore?

Answer 2

planktonic larvae

Question 3

What is a Bryozoa and how many zooids can be part of them?

Answer 3

‘Moss animal’ - 2 million

Question 4

How do Bryozoa feed?

Answer 4

oscillate and rotate lophophore to increase contact with prey

Question 5

What are Brachiopoda?

Answer 5

Lamp shells - ‘arm foot’

Question 6

How do Brachiopoda attach to rock

Answer 6

Flexible stalk

Question 7

What are Rotifera?

Answer 7

‘Wheel bearers’

Question 8

What is the most distinctive organ in Rotifera, and what is it used for?

Answer 8

ciliated corona, sweep particles into mouth

Question 9

What structure in Rotifera help it grind up its food?

Answer 9

Mastax

Question 10

How do Rotifera reproduce?

Answer 10

Some only have females, reproduce parthenogenetically

Question 11

Describe the structure of Platyhelminthes (3)

Answer 11

Bilateral acoelomate

Digestive tract, gut often branched

excretory organs called protonephridia + flame cell

Question 12

What are the 3 classes of Platyhelminthes?

Answer 12

Turbellaria

Trematoda

Cestoda