The respiratory organs of crustaceans are
tracheae
book lungs
gills
skin
Correct Answer :
C. gills
Related Questions
The term 'Protista' was given by
Carolus Linnaeus
E. Haeckel
G.L. Cuvier
John Ray
Diploblastic acoelomate condition is found in
Ascaris
Planaria
Rotifer
Sea anemone
The segmentation which affects both external and internal features represented in
annelida
peripatus
insects
acolopendra
The biggest phylum in regard to the number of species is
Arthropoda
Platyhelminthes
Chordata
Protozoa
Archaeopteryx called a connecting link, carried the characters, of
reptile and bird
reptile and mammals
fish and amphibia
reptile and amphibia
An insect differs from a spider in the following ways :
Insect has 6 pairs of legs and one pair of wings while spider has 4 pairs of legs and no wings
Insect has 4 pair of legs and two pairs of wings while spider has 3 pairs of legs and no wings
Insect has 3 pairs of legs and two pairs of wings and spider has 4 pairs of legs and no wings
Insect has 3 pairs of legs and generally no wings while spider has 5 pairs of legs and generally one pair of wings
A suctorial mouth is present in
leech
cockroach
housefly
butterfly
Canal system is characteristic of
hydra
sponge
sea anemone
sea urchin
Biramous appendages are typically found in
insects
crustaceans
annelids
arachnids
Flame cells, parenchyma and a pair of longitudinal nerve cords are found in
Taenia
Peripatus
Ascaris
Musca
Natural system of classification has the basis of
morphology
Phylogeny
both (a) and (b)
ontogeny
The body of Hydra is
asymmetrical
symmetrical
bilaterally symmetrical
radially symmetrical
For finding a haemocoel which animal you will select ?
Earthworm
Hydra
Ascaris
Scolopendra
These species inhabiting different geographical areas are
allopatric
sibling species
morphospecies
sympatric
The correct phylogenetic sequence in taxonomy is
Pisces, Amphibia, Reptilia, Mammalia
Pisces, Reptilia, Amphibia, Mammalia
Amphibia, Pisces, Reptilia, Mammalia
Amphibia, Reptilia, Pisces, Mammalia
Which one of the following sets of animals belongs to class cydostomata
Amphioxus and Balangolossus
Petromyzon and Myxine
Herdmania and Myxine
Herdmania and Amphioxus
Taenia, Periplaneta and Pheretima are non-chordates because
their body is segmented
they do not possess a post-anal tail
they do not have a coelom
all of these
Correct statement is :
Archaeopteryx is a connecting link between mammals and aves
Duck-bill platypus is a connecting link between reptiles and mammals
Sea horse is a connecting link between fish and horse
Hydra is a connecting link between protozoa and metazoa
The concept of homology can be applied to
gross structures of the body
physiological mechanisms
biochemical similarities
all of these
Chief distinguishing features of mammals are
hairy skin and ovipary
hairy skin and mammary glands
mammary glands and teeth
pinnae and teeth
Glass snake is a
lizard
tree snake
nematode
fish
The mammals of order Rodentia have
long incisors
short incisors
long canines
long molars
Which of the following is a species ?
Mammalia
Carnivora
Canidae
Catiisfamilaris
Which of the following is not a deuteros-tome phylum ?
Mollusca
Echinodermata
Hemichordata
Urochordata
The order insectivora of class mammalia includes
moles, shrews and hedgehogs
monkeys, apes and man
whales and dolphins
kangaroo, lions and wolves
Character common in spider, cockroach and centipede is
compound eyes
joint legs
book lungs
green glands
The beak of birds is toothed in
Ostrich
Kiwi
Archaeopteryx
Pelican
Which of the following is not correctly matched ?
Flame CellsPlatyhelminthes
Metametric segmentationMollusca
Gill-slitChordata
Stininging cellsCoelenterata
Which of the following animals has a ventral nerve cord
Frog
Cockroach
Hydra
Earthworm
The taxonomic unit of any rank/category is known as
species
taxon
taxis
genus