Q.1
How many overlapping plates make up a chiton's shell?
  • 7
  • 10
  • 6
  • 8
Q.2
The protective shell of a mollusk...
  • is secreted by the mantle.
  • Grows from the end of the mollusk foot.
  • Is constantly replaced by bigger shells as the mollusk grows.
  • forms when the mollusk reaches adulthood.
Q.3
A squid has multiple _______, but only 2 ______.
  • arms, tentacles
  • tentacles, arms
Q.4
Has no head distinction
  • bivalves
  • cephalopods
  • gastropods
  • all of the above
Q.5
Can form pearls
  • bivalves
  • cephalopods
  • gastropods
  • cephalopods, bivalves, Gastropods
Q.6
Cephalopods are the smartest invertebrates.
  • true
  • false
Q.7
Cephalopods have beaks.
  • true
  • false
Q.8
Which of the following is NOT a class of molluscs?
  • bivalves
  • crustaceans
  • gastropods
  • cephalopods
0 h : 0 m : 1 s