Phylum Mollusca - lamelli branchiata/bivalvia

Question 1

this class also called as?

Answer 1

pelecypoda

Question 2

what does this class include?

Answer 2

oysters,clams and mussels

Question 3

are sensory appendages reduced or distinct?

Answer 3

reduced

Question 4

foot help in?

Answer 4

digging

Question 5

what are byssus threads?

Answer 5

the threads that help in attaching to the surface

Question 6

byssus threads can be seen in?

Answer 6

mytilus

Question 7

is radula present or absent?

Answer 7

absent

Question 8

they are also called as?

Answer 8

suspension feeders or filter feeders

Question 9

what helps in digestion?

Answer 9

crystalline style

Question 10

are they monoecious or dioecious?

Answer 10

dioecious

Question 11

is development direct or indirect?

Answer 11

indirect

Question 12

what are some of their larval forms?

Answer 12

trochopore,veliger and glocidium

Question 13

where does glocidium larva occur in?

Answer 13

in fresh water mussels (unio)

Question 14

is glocidium parasitic or not?

Answer 14

parasitic (on gills of fishes)

Question 15

examples of bivalvia organisms

Answer 15

unio(freshwater mussel),mytilus(marine mussel),pinctada

Question 16

pinctada is a pearl producing oyster,true or false

Answer 16

true