Mollusks: The Survivalists Investigation
Name:
Phylum Mollusca Reading: Go to & read Phylum Mollusca Reading Page to answer the following questions.
31) Where are mollusks located within the
animal kingdom phylogenetic tree?
32) What does the word “Mollusca” mean?
33) What are the 6 features found in bodies
of members in the phylum Mollusca?
34) Mollusks
develop from…
… germ layers: an
ectoderm, endoderm &…
35) In general,
mollusks have…
… symmetry…
…& called…
… & the first to have a true
body cavity making them a…
36) Most mollusks have a distinct…
… region with eyes and a…
37) They also have a muscular…
… that is used primarily for…
38) …, a tissue layer called a…
… that produces the…
39) …and a mass of internal…
… which is called the…
40) What 2 organ systems are found in
mollusks, but not flatworms & roundworms?
41) What 2 organs/structures are found
EXCLUSIVELY in mollusks? AND Describe
these two organs…
Describe the function of the Foot in the following type of mollusks…
42) Gastropod (Snail/Slug)
43) Bivalve (Clam)
44) Cephalopod (Squid/Octopus)
45) Mollusks have a circulatory organ called
a…
46) … & a respiratory organ called…
… to pump…
… that absorb & exchange…
47) What is the main difference between an
open & closed circulatory system?
48) Gastropods &
Bivalves have an…
…circulatory system, while
cephalopods have a…
… since they have
specialized pigment
cells called…
49) Cephalopods have the
ability to color change or…
50) They also
have an…
… that produces &
expels a cloud of…
51) Cephalopods have
a highly advanced…
52) Mollusks ONLY
reproduce by…
Class:
… making them
extremely…
… reproduction. Some are
separate sexes called…
“Meaning”:
…circulatory
system & have 3…
… to help protect themselves
from predators or danger.
…& also have welldeveloped complex…
… or same sex
called…
Examples of Members:
53) Gastropoda
54) Bivalvia
55) Cephalopoda
Mollusks CER (Claim I Evidence I Reasoning)
Write a CER over the adaptations & characteristics that allow mollusks to be great survivalists. CER needs to
be written scientifically, in complete sentences, in your own words & follow correct CER formatting (5
sentences minimum: 1 C, 3-5 E, 1R). Use evidence that from the video or reading to answer the following
question & make sure your evidence sentences are thoroughly explained (examples). (*10 Points Total)
Scientific Question: Are mollusks great survivalists?
SKIP