marine fishes
fresh water fishes
lung fishes
none of these
C. lung fishes
Amphioxus and Balangolossus
Petromyzon and Myxine
Herdmania and Myxine
Herdmania and Amphioxus
Silver fish
Goldfish
Silver carp
Seahorse
genus
order
class
species
Flame cellsplatyhelminthes
Stinging cellscoelenterata
Metameric segmentationmollusca
Gill slitschordata
Sponge
Jelly fish
Tapeworm
Roundworm
Scales
Eggs
Shelled eggs
Gills
echinodermata
ophiuroidea
crinoidea
echinoidea
hag fish
eel
flyingfish
seahorse
Cestoda
Trematoda
Sporozoa
Suctoria
tracheae
book lungs
gills
skin
Passer domesticus
Pavo cristatus
Psittacula krameri
None of these
Protozoans
Arthropods
Echinodermata
Molluscs
fungia
meandria
astia
none of these
radial symmetry
bilateral symmetry
asymmetry
both (a) and (b)
Onychophora, Myriapoda, Arachnida
Hydrozoa, Scyphozoa, Anthozoa
Polychaeta, Hirudiniea, Oligochaeta
Gastropoda, Rhizopoda, Scaphopoda
Cephalochordata
Agnatha
Urochordata
Gnathostomata
true snake
blind worm
false snake
true worm
2 pairs of legs
3 pairs of legs
4 pairs of legs
5 pairs of legs
Siren
Ophiosaurus
Triturus
Ichthyophis
Hyalonema
Euplectalla
Tethya
Leucosolenia
parasitic flatworms
free living flatworms
parasitic tapeworms
free living tapeworms
mollusca
bivalvia
scaphopoda
gastropoda
Ant eater
Dolfin
Heloderma
Echidna
Geographical isolation
Reproductive isolation
Behavioural isolation
Hybrid in viability
sexually reproducing species
asexually reproducing species
self-fertilising species
none of these
fishes with a sinlge gill aperture
insects with a single pair of functional spiracles
mammals with a single common cloacal opening
protozoans with single flagellum
porifera
coelentrata
annelida
mollusca
absence of walking legs
absence of mandibles
absence of wings
presence of walking legs
India
Australia
Africa
South America
Limax
Pila
Sepia
Murex