1. Unit 5 Individual Project
Name: Victoria Rock
Date: September 24, 2011
There are 9 animals in nine different Phyla. Be sure to look at every page.
Animal Phylum Dichotomous Key Classification
(steps)
1 Cnidaria (1b,2a,3a,4b) class:
1b: Symmetry is Scyphozoa
radial or bilateral
2a: Radial
symmetry, lacks a
well defined head
3a: No spines or
arms present
4b: Saucer-shaped,
transparent body
with thin tentacles,
free floating
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2. 2 Mollusca (1b,2b,6a,7b,11a, class:
12b,13a) Gastropoda
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
head end &
posterior tail end)
6a: Animal has no
apparent skelton,
or may have an
exoskelton(hard
outer covering) or
may have a shell;
invetebrate
7b: Hard outer
covering,
exoskeleton, or
shell:not worm
like
11a: No jointed
appendages
12b: Soft body,
obvious head
13a: May or may
not have a shell;
head with
tentacles, small
eye or eys spot
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3. 3 Annelida (1b,2b,6a,7a,8b, class:
9a) Secernentea
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
head end &
posterior tail end)
6a: Animal has no
apparent skelton,
or may have an
exoskelton(hard
outer covering) or
may have a shell;
invetebrate
7a: No hard outer
covering, no
exoskeleton, or no
shell; worm like
8b: Body is not
segmented
9a: Body long and
tubular
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4. 4 Chordata (1b,2b,6a,7b,11b,1 class: Insecta
4b,15b)
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
head end &
posterior tail end)
6a: Animal has no
apparent skelton,
or may have an
exoskelton(hard
outer covering) or
may have a shell;
invetebrate
7b: Hard outer
covering,
exoskeleton, or
shell:not worm
like
11b: Jointed
appendages
14b: One pair of
antennae or none,
no large claws
15b: Three pairs of
legs, wings present
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5. 5 Porifera (1a) class:
1a: Symmetry is Demospongiae
irregular(neither
bilateral or
radial);aquatic;bod
y structute without
tissues or organs.
6 Echinodermata (1b,2a,3b,5a) class:
1b: Symmetry is Asteroidea
radial or bilateral
2a: Radial
symmetry, lacks a
well defined head
3b: Spines or arms
present
5a: Five arms
present, body
surface knobby
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6. 7 Chordata (1b,2b,6b,16b,18b, class: Aves
19b,20a)
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
head end &
posterior tail end)
6b: Animal has
internal skeleton;
vertebrate
16b: Not fish like,
body not flattened,
appendages jointed
or absen Claws or
nails presents on
toes; skin covered
with feathers or
hair
20a: Feathered,
claws present
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7. 8 Platyhelminthe (1b,2b,6a,7a,8b,9b, class:
s 10a) Turbellaria
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
head end &
Image Rights: Allen G. posterior tail end)
Collins and the UC Museum of Paleontology 6a: Animal has no
apparent skelton,
or may have an
exoskelton(hard
outer covering) or
may have a shell;
invetebrate
7a: No hard outer
covering, no
exoskeleton, or no
shell; worm like
8b: Body is not
segmented
9b: Body flattened
10a: Free living,
aquatic, ribbon-
like, smooth
9 Nematoda (1b,2b,6a,7a,8b,9b, class: Cestoda
10b)
1b: Symmetry is
radial or bilateral
2b: Bilateral
symmetry(similar
right & left body
halves, anterior
Image Rights: Courtesy of University of Minnesota head end &
posterior tail end)
© 20010-2011 Career Education Corporation University Group

8. 6a: Animal has no
apparent skelton,
or may have an
exoskelton(hard
outer covering) or
may have a shell;
invetebrate
7a: No hard outer
covering, no
exoskeleton, or no
shell; worm like
8b: Body is not
segmented
9b: Body flattened
10b:
Endoparasites(live
s inside host); may
look segmented
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