Frog
Lizard
Pigeon
Whale
D. Whale
primitive burrowing egg laying mammal
advanced egg laying reptile
primitive egg laying reptile
primitive aquatic egg laying animal
Ostrich
Kiwi
Archaeopteryx
Pelican
leech
cockroach
housefly
butterfly
Hydra
Earthworm
Centipede
Cockroach
Scales
Eggs
Shelled eggs
Gills
allopatric
sibling species
morphospecies
sympatric
gross structures of the body
physiological mechanisms
biochemical similarities
all of these
Coelenterata
Porifera
Annelida
Arthropoda
arthropoda
pisces
mammalia
reptilia
insects
birds
fishes
reptiles
pinnae
four-chambered heart
movement on two limbs only
diaphragm
Ant eater
Dolfin
Heloderma
Echidna
four-chambered heart
shelled eggs
thecodont dentition
powerful jaws
porifera
coelentrata
annelida
mollusca
round
parasitic
triploblastic
segmented
compound eyes
joint legs
book lungs
green glands
Giraffe
Crocodile
Shark
Ostrich
Mammary glands, hairs, gill slits
Notochord, gill slits and dorsal ! tubular nervous system
Notochord, scales and dorsal tubular nervous system
Gill slits, vertebral column and notochoitl
Ascaris, Hydra, Earthworm
Leech, Hydra, Tapeworm
Hydra, Man, Leech
Tapeworm, Toad, Starfish
teleostei
mollusca
pisces
echinodermata
radial symmetry
bilateral symmetry
asymmetry
both (a) and (b)
shark
mud puppy
bony fish
fish
coral snake
brain coral
tree snake
none of these
Insecta
Arachnida
Crustacea
Polychaeta
Sponge
Jelly fish
Tapeworm
Roundworm
Coelenterata
Hydrozoa
Scyphozoa
Anthozoa
sexually reproducing species
asexually reproducing species
self-fertilising species
none of these
Insecta
Myriapoda
Arachnida
Onychophora
an artificial system of classification
a natural system of classification
a system based on phylogeny
none of these
Sea anemone
Planarian
Pheretima
Starfish