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
Correct Answer :
B. by radioactive dating
Related Questions
Which of the following gases were absent in free form when life originated on earth?
Oxygen
Hydrogen
Methane
Ammonia
A starfish with six arms, may be a case of
variation
evolution
autotomy
mutation
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 study of Galapagos Finches shows
adaptive radiation
adaptive convergence
use and disuse of organs
none of these
A kind of mimicry which presumably works as a double insurance is
batesian mimicry
mullerian mimicry
warning colouration
concealing colouration
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
Ontogeny recapitulates phylogeny is the statement relating to
morphology
physiology
taxonomy
embryology
Peking man is known as
Homo sapiens
Pithecanthropus
Sinanthropus
None of these
Survival due to geographic isolation is best exemplified by mammalian fauna of
Oriental region
Ethiopian region
Australian region
Palaearctic region
Fossil Archaeopteryx was discovered and preserved as
a petrified specimen
a mineralised specimen
a mould
embedded in amber
The diploid number of chromosome in Chimpanzee, Gorilla and Orangutan is
2n = 44
2n = 46
2n = 48
none of these
Connecting link between nonchordata and chordata is
Peripatus
Archaeopteryx
Tachyglossus
Balanoglossus
The function affected by point mutation in p-globin in sickle cell anaemia is
protein folding
transcriptional control
nonsense mutation
none of these
The first mammal arose
after the extinction of dinosaurs
before the origin of dinosaurs
along with dinosaurs
from the dinosaurs
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
Amphibians appeared and became dominant in the
Mesozoic era
Coenozoic era
Palaeozoic era
None of these
The idea of "Survival of fittest" was given by
Darwin
Herbert Spencer
Mai thus
Lovell
The fossil formed from harder parts of the body infiltrated by minerals and turned into stony shapes is
moulds
coprolites
petrified
cast
Geological evidence of most primitive mammals is found in
Centred Africa
China
India
Australia
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 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
The concept of use and disuse of organs was given by
Darwin
Wallace
Mendel
Lamarck
The book "Voyage of the Beagle" is concerned with which one of the following ?
Lamarckism
Theory of natural selection
Bird flight mechanisms
Both and
Doubis in 1891 found the fossil of Java ape man. It is
Sinanthropus pekinensis
Homoerectus
Homo rhodesiensis
Homo spisaens
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 epoch of human civilisation is
Pliocene
Holocene
Pleistocene
Palaeocene
Which were dominant during Mesozoic era
Pisces
Birds
Ruling mammals
Ruling reptiles
Which is a vestigeal organ of python
Nose
Scales
Teeth
Hindlimbs
We use the term hybrid breakdown when the
offspring of hybrids are inviable or sterile
a hybrid zygote is formed but it fails to develop
hybrid adults fail to produce functional gametes
sperms and ova of different species of animals are unable to fuse
Role of isolation in evolution is
differentiation of species
maintenance of species
evolutionary divergence
extermination of species