Gastropoda Test

Question 1

what does Gastropoda mean?

Answer 1

stomach foot

Question 2

what organisms are in the class Gastropoda?

Answer 2

snails, slugs, abalone, nudibranchs, conch, limpets, and sea hares

Question 3

What is the symmetry?

Answer 3

Asymmetrical with torsion

Question 4

What is the body like?

Answer 4

body usually in coiled shell

Question 5

What is the head and radula like?

Answer 5

head well developed with radula

Question 6

what is the foot like?

Answer 6

foot large and flat

Question 7

What is reproduction like in Gastropoda?

Answer 7

dioecious or monoecious, some with trochophore, typically with veliger larva

Question 8

What are the benefits of torsion?

Answer 8

-head enter first so less exposure to predators
-allow clean water to enter mantle cavity through the front
-makes snails more sensitive to stimuli

Question 9

How do gastropods prevent desiccation (drying up)?

Answer 9

drawing the foot into mantle which makes the operculum close the opening of the shell

Question 10

Difference between dextral and sinistral shells?

Answer 10

Dextral - aperture on the right
Sinistral - aperture on the left

Question 11

Wha is rasping organ made up of?

Answer 11

chitinous belt & rows of curved teeth