What is common to fishes, amphibians and reptiles ?
Scales
Eggs
Shelled eggs
Gills
Correct Answer :
B. Eggs
Related Questions
Only poisonous lizard of the world is
Ophiosaurs
Heloderma
Varanus
None of these
The most important characteristic of class aves is
homeothermous animals
exoskeleton of feathers
bipedal vertebrates
none of these
Canal system is characteristic of
hydra
sponge
sea anemone
sea urchin
Tube feet are the locomotory organs found in
Protozoans
Arthropods
Echinodermata
Molluscs
The main basis of classification of Protozaoa is
number of nuclei
shape of the organisms
method of reproduction
locomotary device
Flame cells, parenchyma and a pair of longitudinal nerve cords are found in
Taenia
Peripatus
Ascaris
Musca
Echis carinata is known as
coral snake
brain coral
tree snake
none of these
Which of the following have played a part in human evolution, different races adapting to different climate ?
Geographical isolation
Reproductive isolation
Behavioural isolation
Hybrid in viability
Glow worm is
an annelid
a true worm
a type of earthworm
an insect
Which of the following is a species ?
Mammalia
Carnivora
Canidae
Catiisfamilaris
Which of the following is not an acoelomate animal ?
Sponge
Jelly fish
Tapeworm
Roundworm
Aphrodite, commonly called as sea mouse is a/an
annelide
fish
mollusc
arthropod
One of the following is considered as a living and connecting link between Annelida and Arthropoda:
Peripatus
Limulus
Balanoglossus
Sphenodon
Which of the following belongs to Mollusca ?
Starfish
Dogfish
Silver fish
Goldfish
The smallest unit of classification in animals is
variety
species
sub species
genus
All worms are mainly
round
parasitic
triploblastic
segmented
Which of the following animals has a diaphragm between the thorax and abdomen ?
Frog
Lizard
Pigeon
Whale
Which of the following is homiother-mous ?
Lizard
Frog
Rabbit
Cuttlefish
Viviparous animal is
shark
mud puppy
bony fish
fish
Brain coral is
fungia
meandria
astia
none of these
Branchiostonta is an example of
Cephalochordata
Agnatha
Urochordata
Gnathostomata
The body of Hydra is
asymmetrical
symmetrical
bilaterally symmetrical
radially symmetrical
Apart from mammals, the other group of animals maintaining high and constant body temperature is
insects
birds
fishes
reptiles
In which of the following sets, groups are not correctly matched ?
Onychophora, Myriapoda, Arachnida
Hydrozoa, Scyphozoa, Anthozoa
Polychaeta, Hirudiniea, Oligochaeta
Gastropoda, Rhizopoda, Scaphopoda
The term 'Protista' was given by
Carolus Linnaeus
E. Haeckel
G.L. Cuvier
John Ray
Taxonomy is the science that deals with the classification of
plants
animals
microorganisms
living organisms
In the course of evolution, the true coelom appeared first in
aschelminthes
annelida
arthropoda
echinodermata
Segmentation of the body is not represented in
crayfish
frog
grasshopper
starfish
The type of symmetry best suited to non-motile organisms is
radial symmetry
bilateral symmetry
asymmetry
both (a) and (b)
Which of the following is a correct hierar-chial sequence in systematics ?
Species, genus, family, order, class, phylum
Species, genus, order, family, class, phylum
genus, species, order, family, class, phylum
genus, family, order, class, species, phylum