Which animals dominated in Paleozoic era ?
Fishes
Amphibians
Reptiles
Birds
Correct Answer :
A. Fishes
Related Questions
Fossilisation occurs where
animals are destroyed by environment
animals are destroyed by scavangers
animals are burried by natural " processes
organisms are burried and preserved by natural processes
The book "Voyage of the Beagle" is concerned with which one of the following ?
Lamarckism
Theory of natural selection
Bird flight mechanisms
Both and
Human beings living in different geographical areas and under different environmental conditions are kept under one species because
they show adaptive variations to their environment
they share the common karyotype
they can freely interbreed and share a common gene pool
their features are different yet they are similar essentially
Which were dominant during Mesozoic era
Pisces
Birds
Ruling mammals
Ruling reptiles
The first mammal arose
after the extinction of dinosaurs
before the origin of dinosaurs
along with dinosaurs
from the dinosaurs
The function affected by point mutation in p-globin in sickle cell anaemia is
protein folding
transcriptional control
nonsense mutation
none of these
An animal is more likely to be preserved as a fossil if it contains large quantities of
cartilage and bone
proteins
inorganic materials
keratin materials
Geological evidence of most primitive mammals is found in
Centred Africa
China
India
Australia
Which is a vestigeal organ of python
Nose
Scales
Teeth
Hindlimbs
The resemblance between the south American llama and the African camel indicates a common ancestry. This is
homological evidence for evolution
palaentological evidence for evolution
biogeographic evidence for evolution
none of these
Species were regarded as unchangeable by
Lamarck
Morgan
Charles Darwin
Many biologists of 19th century
Role of isolation in evolution is
differentiation of species
maintenance of species
evolutionary divergence
extermination of species
Appearance of ancestral characters in the new born, such as tail, monstral face, gill slits, multiple mammale etc. are known as
homologous
analagous
ativistic
vestigeal
In forming the theory of evolution by Natural Selection, Charles Darwin was greatly influenced by
environmental factors
mutations
malthu's ideas on population control
all of these
A fossil is a
laboratory preserved animal
dead animal of the past
organic relic of the past
stuffed animal
The concept of use and disuse of organs was given by
Darwin
Wallace
Mendel
Lamarck
Co-worker of Darwin was
Bateson
Mendel
Wallace
Lamarck
The first fossil man was
Australopithecus
Homo erectus
Sinanthropus
Ginganlo pithecus
Some of the important evidences of organic evolution are
occurrence of homologous and vestigeal organs
occurrence of analogous and vestigial organs
occurrence of homologous and analogous organs
occurrence of analogous oragans only
Fire was first used for protection and cooking by
Java man
Neanderthal man
Peking man
Cromagnon man
Which of the following gases were absent in free form when life originated on earth?
Oxygen
Hydrogen
Methane
Ammonia
Fossil Archaeopteryx was discovered and preserved as
a petrified specimen
a mineralised specimen
a mould
embedded in amber
Which animals dominated in Paleozoic era ?
Fishes
Amphibians
Reptiles
Birds
The diploid number of chromosome in Chimpanzee, Gorilla and Orangutan is
2n = 44
2n = 46
2n = 48
none of these
Amphibians appeared and became dominant in the
Mesozoic era
Coenozoic era
Palaeozoic era
None of these
A starfish with six arms, may be a case of
variation
evolution
autotomy
mutation
Which of these does not play a role in evolution ?
Mutation
Polyploidy
Natural selection
Acquired characters
Peking man is known as
Homo sapiens
Pithecanthropus
Sinanthropus
None of these
The recent ancestors of modem man were
Java Ape and Peking man
Peking man and Rhodesian man
Cromagnon man and Rhodesian man
Cromagnon man and Neanderthal man
Along with reduction in the number of toes in the modern horse, the other most significant evolutionary change is
increase in the size of eyes
increase in the size of brain
straightening of back
change in dentition from browsing to grazing