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BIO170 General Biology I Freeman/Mac Leod FMCC
Table 1: Summary Table of Animal Characteristics
Animal
Symmetry
Tissue
Organization
asymmetric
cellular; no true none
intracellular
tissues
(spongocoel) digestion
Sponge
(Porifera)
Circulatory
System
Habitat
none; body
surface
aquatic
diploblastic
one opening
none
into
(gastrovascul gastrovascul none; body
ar cavity)
ar cavity
surface
aquatic
triploblastic
acoelomate
one opening
into
gastrovascul none; body
ar cavity
surface
aquatic
coelomate
two
openings;
tube within a
tube
closed
terrestrial
coelomate
two
openings;
tube within a
tube
open
aquatic
pseudocoelo
mate
two
openings;
tube within a none; body
tube
surface
parasitic
Hydra
(Cnidaria)
radial
Planarian
(Platyhelmithe
s)
bilateral
Type of
Cavity
Earthworm
(Annelida)
bilateral
triploblastic
Clam
(Mollusca)
bilateral
triploblastic
Roundworm
(Nematoda)
bilateral
triploblastic
Crayfish
(Arthropoda)
bilateral
triploblastic
coelomate
bilateral
triploblastic
coelomate
Grasshopper
(Arthropoda)
Sea star
bilateral as
(Echinodermat
larva; radial
a)
as adult
triploblastic
coelomate
bilateral
triploblastic
coelomate
Pig (Chordata)
Digestive
Openings
two
openings;
tube within a
tube
open
two
openings;
tube within a
tube
open
much
reduced
two
two
openings;
tube within a
tube
closed
aquatic
terrestrial
aquatic
terrestrial
BIO170 General Biology I Freeman/Mac Leod FMCC
Table 1: Summary Table of Animal Characteristics
Animal
Sponge
(Porifera)
Hydra
(Cnidaria)
Respiratory Excretory
Support
Organs
System/Organs Locomotion System
Nervous
System
Appendages Organization
none; body
surface
none; body
surface
sessile
spicules;
spongin
none
none; body
surface
none; body
surface
crawling
(limited)
hydrostatic
skeleton
none
nerve net
flame cells
creep with
muscle
contractions
and cilia
hydrostatic
skeleton
none
brain; two
ventral nerve
cords; ladder
like
nephridia
peristalsis-like
movement
hydrostatic
and setae
skeleton
none
dorsal brain;
ventral nerve
cord
nephridia
external
muscular foot shell
ganglia and
nerves
lateral lines
longitudinal
muscles only;
whip-like
hydrostatic
movement
skeleton
none
dorsal and
ventral nerve
cord
green glands
walking-legs;
swimmingswimmerets
and tail
exoskeleton yes
dorsal brain;
ventral nerve
cord
walking-legs;
flying-wings exoskeleton yes
dorsal brain;
ventral nerve
cord
Planarian
(Platyhelmit none; body
hes)
surface
Earthworm
(Annelida) none; body
surface
Clam
(Mollusca)
gills
Roundworm
(Nematoda) none; body
surface
Crayfish
(Arthropoda
)
gills
Grasshopper
(Arthropoda tracheal
)
system
Sea star
(Echinoderm
ata)
skin gills
malpighian
tubules
endoskeleto
n of
calcareous
plates
none
none; body
surface
tube feet
kidney
bony
endoskeleto
walking - legs n
yes
Pig
(Chordata)
lungs
none
none
nerve ring in
central disk;
epidermal
nerve network
dorsal brain;
dorsal nerve
cord