Tripoblastic - Protosomes - Lophotrochozoa

Question 1

‘Lophophore’

Answer 1

mobile, feeding structure for immobile animals

Question 2

‘Trochophore’

Answer 2

larval form like a spinning top

Question 3

‘Bryozoa’

Answer 3

Moss animals

Question 4

Bryozoa are colonial animals with individuals called

Answer 4

Zooids

Question 5

How do bryozoan increase contact with prey?

Answer 5

Oscillate and rotate their lophophore

Question 6

How do bryozoan reproduce?

Answer 6

release sperm into water. Fertilisation is internal

Question 7

‘Brachiopoda’

Answer 7

arm foot

Question 8

What do brachiopoda feed with?

Answer 8

motile lophophore

Question 9

How do most species of brachiopoda reproduce?

Answer 9

release gametes into water

Question 10

‘Rotifera’

Answer 10

Wheel bearer

Question 11

How do rotifera move?

Answer 11

beating cilia rather than muscular contraction

Question 12

What sweeps particles into Rotifera mouth?

Answer 12

coronal cilia

Question 13

Food is ground up in the gut of Rotifer by what?

Answer 13

Mastax structure

Question 14

How was genetic diversity sustained before sex between rotifer?

Answer 14

Picking up gene fragments from the environment

Question 15

‘Platyhelminthes’

Answer 15

flatworms

Question 16

What is enabled by the flat worm being flat?

Answer 16

Gas exchange by diffusion

Question 17

What are the excretory organs of Platyhelminthes called?

Answer 17

Protonephridia

Question 18

(Class of Platyhelminthes) Small portions of turbellaria can…

Answer 18

regenerate into a completely new worm

Question 19

(Class of Platyhelminthes) Turbellaria have a pharynx that is eversible. What does this mean?

Answer 19

It can be extended by being turned inside out

Question 20

(Class of Platyhelminthes) ‘Trematoda’

Answer 20

Holes (ventral suckers for attachment)

Question 21

(Class of Platyhelminthes) Trematoda have complex life cycles specialised for what?

Answer 21

Parasitism in animal tissues (generate enormous number of offspring)

Question 22

The host in which the fluke matures is called

Answer 22

Definitive host

Question 23

(Class of Platyhelminthes) Cestoda

Answer 23

Tapeworms

Question 24

Tapeworms are specialised parasites of what?

Answer 24

vertebrates

Question 25

(Class of Platyhelminthes) Cestoda don’t have a gut. How do they obtain nutrients?

Answer 25

Absorbs nutrients through the skin (also helping them to camouflage)

Question 26

‘Mollis’

Answer 26

Soft

Question 27

Describe the basic bod plan of a mollusc

Answer 27

foot, mantle and visceral mass (not segmented)

Question 28

‘Radula’ is used for feeding in molluscs, meaning

Answer 28

Scraper

Question 29

(Class of mollusc) Polyplacophora

Answer 29

Many shells

Question 30

(Class of mollusc) Polyplacophora have how many overlapping shells?

Answer 30

8

Question 31

(Class of mollusc) What are gastropoda?

Answer 31

Stomach foot - snails, slugs

Question 32

What degree does the visceral mass twist through during development?

Answer 32

180

Question 33

(Class of mollusc) Gastropoda either swim or…

Answer 33

gallop