22. Facts:
1. MOST live in the ocean, SOME in fresh
water and/or land
2. 1mm to giant squid 18m
23. Facts:
1. MOST live in the ocean, SOME in fresh
water and/or land
2. 1mm to giant squid 18m
3. Most are slow–- except squid, 40km/h
and 4m out of water
24. Facts:
1. MOST live in the ocean, SOME in fresh
water and/or land
2. 1mm to giant squid 18m
3. Most are slow–- except squid, 40km/h
and 4m out of water
4. Bodies are alike
29. • Foot: uses to move
• Visceral mass: contains organs
• Mantle: covers organs, protects mollusks
without a shell
30. • Foot: uses to move
• Visceral mass: contains organs
• Mantle: covers organs, protects mollusks
without a shell
• Shell: Most mollusks -- secreted by the
mantle
37. Heart!
• Open circulatory system--gastropods and
bivalves
– Heart pumps blood into open spaces in
animal’s body
38. Heart!
• Open circulatory system--gastropods and
bivalves
– Heart pumps blood into open spaces in
animal’s body
• Closed circulatory system--cephalopods
39. Heart!
• Open circulatory system--gastropods and
bivalves
– Heart pumps blood into open spaces in
animal’s body
• Closed circulatory system--cephalopods
– Heart pumps blood through blood vessels
43. Brain!
• Mollusks have nerves throughout body
control--breathing, eating and moving
• Cephalopods have more complex nervous
system
– Most advanced of all invertebrates
44. Brain!
• Mollusks have nerves throughout body
control--breathing, eating and moving
• Cephalopods have more complex nervous
system
– Most advanced of all invertebrates
– Smartest invertebrate
45. Words and pictures for
dichotomous Mollusk Key
The edges The grooves
of this leaf on this shell
are are radiating
serrated
The grooves
on this shell
are circular