Review 8-12 (Final) Flashcards
How do animals reproduce?
sexual reproduction (most common), asexual reproduction
List the types of symmetry found in animals.
asymmetry, radial symmetry, bilateral symmetry
symmetry where the sides of the body are mirror images; the most common type of symmetry in animals; linked to cephalization
bilateral symmetry
symmetry with body parts arranged around a central axis
radial symmetry
lacking symmetry
asymmetry
type of gut with only one opening, the mouth, to bring food and to release waste + a sac-like gut
incomplete gut
a fluid filled cavity surrounded by muscle tissue
coelom
What types of organisms have a coelom?
annelids, arthropods, echinoderms, chordates
Why are sponges grouped with the animals?
multicelled; some division of labor between the different cells
What feature of sponges supports and protects them?
spicules
What type of cell builds spicules in sponges?
amoebocytes
What advanced features are found in cnidarians?
true tissue layers
What are the cnidarian body forms?
polyp, medusa
What is the life mode of each cnidarian body form?
polyp- sessile;
medusa- motile
What is unusual about the Portuguese man o’war?
gas filled bladder called “sail” (+ each tentacle composed of different polyps)
Name the three main classes of flatworms.
free-living flatworms, parasitic flukes, tapeworms
What is the primary advancement of nematodes?
m
Porifera: level of organization
m
Porifera: level of organization
cell (lack true tissues)
Porifera: symmetry
radial,
asymmetrical in many
Porifera: body cavity
acoelomate
Porifera: complete/incomplete digestive tract (gut)
incomplete
Porifera: sexual/asexual reproduction
m
Porifera: sexual/asexual reproduction
both
Cnidaria: symmetry
m
Cnidaria: symmetry
radial
Cnidaria: body cavity
acoelomate
Cnidaria: complete/incomplete digestive tract (gut)
incomplete (gastrovascular cavity)
Cnidaria: motility
motile medusa stage;
sessile polyp stage
Platyhelminthes: level of organization
m
Platyhelminthes: symmetry
bilateral
Platyhelminthes: body cavity
acoelomate
Platyhelminthes: complete/incomplete digestive tract
m
Platyhelminthes: complete/incomplete digestive tract (gut)
incomplete
Platyhelminthes: motility
m
Platyhelminthes: sexual/asexual reproduction
m
Nematodes: level of organization
organ system
Nematodes: symmetry
m
Nematodes: body cavity
m
Nematodes: complete/incomplete digestive tract (gut)
m
Nematodes: motility
m
Nematodes: sexual/asexual reproduction
m
type of gut that has both a mouth and an anus with a tubular digestive tract between; called a one-way gut
complete gut
