A limbless amphibian is
Siren
Ophiosaurus
Triturus
Ichthyophis
Correct Answer :
D. Ichthyophis
Related Questions
Sepia is also known as
star fish
cartilagenous fish
jellyfish
cuttlefish
Most important characteristic of the mammal is the presence of
pinnae
four-chambered heart
movement on two limbs only
diaphragm
Duck bill platypus is
primitive burrowing egg laying mammal
advanced egg laying reptile
primitive egg laying reptile
primitive aquatic egg laying animal
Spider is not included under class insects because of
absence of walking legs
absence of mandibles
absence of wings
presence of walking legs
Natural system of classification has the basis of
morphology
Phylogeny
both (a) and (b)
ontogeny
Diploblastic acoelomate condition is found in
Ascaris
Planaria
Rotifer
Sea anemone
The correct phylogenetic sequence in taxonomy is
Pisces, Amphibia, Reptilia, Mammalia
Pisces, Reptilia, Amphibia, Mammalia
Amphibia, Pisces, Reptilia, Mammalia
Amphibia, Reptilia, Pisces, Mammalia
In flat worms, annelids, mollusca and arthropods the mouth develops from blastopore, such animals should be called J
protostomes
deuterostomes
cyclostomes
blastostomes
Members of which phylum exhibit adaptations widely varied environmental conditions ?
Annelida
Platyhelminthes
Echinodermata
Mollusca
Which of the following is homiother-mous ?
Lizard
Frog
Rabbit
Cuttlefish
The mammals of order Rodentia have
long incisors
short incisors
long canines
long molars
Exclusively marine chelones are known as
tortoise
turtles
sea hares
none of these
Which of the following is represented by the largest number of species ?
Insecta
Protozoa
Mammalia
Aves
All animals which do not have the vertebral column are
protozoa
invertebrate
nonchordata
chordata
Turbellarians are
parasitic flatworms
free living flatworms
parasitic tapeworms
free living tapeworms
The system of classification proposed by Linnaeus is regarded by modem biologists as
an artificial system of classification
a natural system of classification
a system based on phylogeny
none of these
Which of the following has no segmentation ?
Hydra
Earthworm
Cockroach
Centipede
Platyhelminthes are called
flat worms
roundworms
tapeworms
blind worms
All mammals have hair, but these are absent in order
Cetacea
Primates
Rodentia
Chiroptera
Which of the following has no segmentation?
Hydra
Earthworm
Centipede
Cockroach
Monotremata is a group of animals which includes
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
The respiratory organs of crustaceans are
tracheae
book lungs
gills
skin
Which of the group has no member having gliding or flying appendages ?
Cydostomata
Fishes
Reptiles
Mammals
Which of the following is a matching set of the class and some of its main distinguishing features?
Sporozoa - infection by sporozoites transmission by intermediate host and a contractile vacuole
Trematoda - well developed suckers, flat and unsegmented body
Arachnida - 3 pairs of legs, chitinous exosketeton and poisonous sting
Insecta - compound eyes, segmented body and nephridia
Which one of the following is found in chordates but not in non-chordates
Gills
Spiracles
Post anal tail
Chitious skeleton
Which of the following is a matching set of groups in animal classification ?
Annelida, Porifera and Mammals as phyla
Hydrozoa, Mollusca and chordata as phyla
Protozoa, Reptilia and Mammalia as classes
Insecta, Cephalopoda and Aves as classes
One of the primary characters of chlor-date is
solid ventral nerve cord
dorsal tubular nerve cord
paired nerve cords
ganglionated nerve cord
Constant body temperature is found in
earthworm
snake
frog
cow
Which of the following is not correctly matched ?
Flame cellsplatyhelminthes
Stinging cellscoelenterata
Metameric segmentationmollusca
Gill slitschordata
Hair of bat and feathers of pigeon are
homologous structures
analogous structures
both (a) and (b
integumentary derivatives