Which of these does not play a role in evolution ?
Mutation
Polyploidy
Natural selection
Acquired characters
Correct Answer :
D. Acquired characters
Related Questions
A fossil is a
laboratory preserved animal
dead animal of the past
organic relic of the past
stuffed animal
Fire was first used for protection and cooking by
Java man
Neanderthal man
Peking man
Cromagnon man
The earliest ancestor of horse from early Eocene period is
miobibbus
eohippus
merychippus
pliohippus
The age of a fossil may be determined most accurately
by comparing it to living similar forms
by radioactive dating
by rate of erosion of the strata
from the depth of strata at which it is found
Role of isolation in evolution is
differentiation of species
maintenance of species
evolutionary divergence
extermination of species
Species were regarded as unchangeable by
Lamarck
Morgan
Charles Darwin
Many biologists of 19th century
Darwin proposed his theory of natural selection on the basis of
Mutation
Environmental factors
Lama's theory
Chromosomal aberrations
The first mammal arose
after the extinction of dinosaurs
before the origin of dinosaurs
along with dinosaurs
from the dinosaurs
The idea of "Survival of fittest" was given by
Darwin
Herbert Spencer
Mai thus
Lovell
The concept of use and disuse of organs was given by
Darwin
Wallace
Mendel
Lamarck
Amphibians appeared and became dominant in the
Mesozoic era
Coenozoic era
Palaeozoic era
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
Which is not a vestigeal organ
Wisdom teeth
Fossa ovalis
Muscles of ear pinna
Ileum
A starfish with six arms, may be a case of
variation
evolution
autotomy
mutation
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
The first fossil man was
Australopithecus
Homo erectus
Sinanthropus
Ginganlo pithecus
A kind of mimicry which presumably works as a double insurance is
batesian mimicry
mullerian mimicry
warning colouration
concealing colouration
Ontogeny recapitulates phylogeny is the statement relating to
morphology
physiology
taxonomy
embryology
Which animals dominated in Paleozoic era ?
Fishes
Amphibians
Reptiles
Birds
Survival due to geographic isolation is best exemplified by mammalian fauna of
Oriental region
Ethiopian region
Australian region
Palaearctic region
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
Co-worker of Darwin was
Bateson
Mendel
Wallace
Lamarck
The fossil formed from harder parts of the body infiltrated by minerals and turned into stony shapes is
moulds
coprolites
petrified
cast
Fossil Archaeopteryx was discovered and preserved as
a petrified specimen
a mineralised specimen
a mould
embedded in amber
Which were dominant during Mesozoic era
Pisces
Birds
Ruling mammals
Ruling reptiles
Connecting link between nonchordata and chordata is
Peripatus
Archaeopteryx
Tachyglossus
Balanoglossus
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
The book "Origin of Species" was written by Charles Darwin in
1859
1885
1883
1897
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
An example of analogy is
wings of a bird and butterfly
wings of pigeon and bat
limbs of horse and man
paddles of dolphin and fins of a fish