Molluscs

Question 1

Name 4 classes of Mollusca

Answer 1

Polyplacophora - chiton

Gastropoda - snails n’ slugs

Bivalvia - mussels n’ cockles

Cephalopoda - squids n’ octupuses

Question 2

What are the 3 main structural components of mollusca?

Answer 2

Foot, visceral mass and mantle

Question 3

What is the ‘Centre of Commerce’?

Answer 3

Mantle secretes shell, encloses a mantle cavity

Question 4

What is the name of the toothed structure used for feeding?

Answer 4

Radula

Question 5

What is the name of the gills in the mantle cavity?

Answer 5

Ctenidia

Question 6

What occurs during the development of gastropods?

Answer 6

Torsion, visceral mass twists 180

Question 7

What generate camouflage in cephalopods

Answer 7

Chromatophores