Gills
Spiracles
Post anal tail
Chitious skeleton
C. Post anal tail
Frog
Toad
Salamander
Tortoise
variety
species
sub species
genus
birds and mammals
birds and reptiles
reptiles and mammals
reptiles, birds and mammals
moles, shrews and hedgehogs
monkeys, apes and man
whales and dolphins
kangaroo, lions and wolves
diaphragm
four-chambered heart
wings
small brain
India
Australia
Africa
South America
Species, genus, family, order, class, phylum
Species, genus, order, family, class, phylum
genus, species, order, family, class, phylum
genus, family, order, class, species, phylum
Cephalochordata
Agnatha
Urochordata
Gnathostomata
Cetacea
Chiroptera
lnsectivora
Lagomorpha
Platyhelminthessolenocytes
Molluscametamerism
Mammaliadiaphragm
Chordatadorsal tubular nerve cord
Hystrin
Tachyglossns
Diadelphyes
None of these
Frog
Lizard
Pigeon
Whale
hairy skin and ovipary
hairy skin and mammary glands
mammary glands and teeth
pinnae and teeth
gross structures of the body
physiological mechanisms
biochemical similarities
all of these
Shipworm
Glowworm
Earthworm
Tapeworm
primitive burrowing egg laying mammal
advanced egg laying reptile
primitive egg laying reptile
primitive aquatic egg laying animal
Hyalonema
Euplectalla
Tethya
Leucosolenia
absence of walking legs
absence of mandibles
absence of wings
presence of walking legs
reptile and bird
reptile and mammals
fish and amphibia
reptile and amphibia
Pleural cavity
Pericardial cavity
Peritoneal cavity
The cavity inside the stomach and intestine
Passer domesticus
Pavo cristatus
Psittacula krameri
None of these
flying fish
silver fish
crayfish
cuttlefish
insecta
oligochaeta
arachnida
crustace
porifera
coelentrata
annelida
mollusca
pinnae
four-chambered heart
movement on two limbs only
diaphragm
shark
mud puppy
bony fish
fish
They are viviparous
They are herbivores
They are carnivores
They have 7 cervical vertebrae
teleostei
mollusca
pisces
echinodermata
hydra
sponge
sea anemone
sea urchin
four-chambered heart
shelled eggs
thecodont dentition
powerful jaws