NCERT; J & K CET 2012
Q51
Errorless
Critical Thinking
MCQ
An isolated population of humans with approximately equal numbers of blue-eyed and brown-eyed individuals was decimated by an earthquake. Only a few brown-eyed people remained to form the next generation. This kind of change in the gene pool is called a
A.
Hardy-Weinberg equilibrium
B.
Blocked gene flow
C.
Bottleneck effect
D.
Founder effect
KCET 2011
Q52
Errorless
ORIGIN OF LIFE
MCQ
Which is responsible for origin of life
A.
Spontaneous generation
B.
Special creation
C.
Catastrophy
D.
Chemosynthesis
Odisha JEE 2011
Q53
Errorless
Darwinism
MCQ
By performing the replica plating experiment, Lederberg supported the
A.
Gene mutation theory
B.
Natural selection theory
C.
Lamarck theory
D.
Darwinian theory
KCET 2011
Q54
Errorless
Darwinism
MCQ
By the statement 'Survival of the Fittest', Darwin meant that
A.
The strongest of all species survives
B.
The most intelligent of the species survives
C.
The cleverest of the species survives
D.
The most adaptable of the species to changes survives
CPMT 2010
Q55
Errorless
ORIGIN OF LIFE
MCQ
Which of the following statements is incorrect
A.
J.B.S. Haldane-law of continuity of germplasm
B.
Louis Pasteur-germ theory of disease and immunology
C.
de Vries-mutation theory
D.
Lemaitre-big bang theory
Kerala PMT 2010
Q56
Errorless
ORIGIN OF LIFE
MCQ
In the early earth, water and CO2 were produced by the combination of $O _ { 2 }$ with
A.
Ammonia and methane
B.
Hydrogen
C.
Organic matter
D.
Sulphates and nitrates
E.
Hydrogen sulphide
AIIMS 2010
Q57
Errorless
Organic Evolution and Speciation
MCQ
Occurrence of endemic species in South America and Australia is due to
A.
Extinction of these species from other regions
B.
Continental separation
C.
Absence of terrestrial route to these places
D.
Retrogressive evolution
MP PMT 2010
Q58
Errorless
Organic Evolution and Speciation
MCQ
Another term for adaptive evolution is
A.
Clinal change
B.
Microevolution
C.
Macro-evolution
D.
Speciation
MP PMT 2010
Q59
Errorless
Organic Evolution and Speciation
MCQ
The first life on earth came in water and evidences indicate that life orginated in one of the following eras
A.
Palaeozoic
B.
Mesozoic
C.
Cenozoic
D.
Proterozoic
DUMET 2010
Q60
Errorless
Organic Evolution and Speciation
MCQ
The major cause of evolution of genes and protein is
A.
Point mutation
B.
Chromosomal aberration
C.
Sexual reproduction
D.
Gene duplication and divergence
DUMET 2010
Q61
Errorless
Organic Evolution and Speciation
MCQ
A common means of sympatric speciation is
A.
Polyploidy
B.
Temporal segregation of breeding season
C.
Spatial segregation of mating sites
D.
Imposition of geographic barrier
Kerala PMT 2010
Q62
Errorless
Organic Evolution and Speciation
MCQ
The alien species introduced into Lake Victoria that was responsible for the extinction of cichlid fishes is
A.
African catfish
B.
Water hyacinth
C.
Carrot grass
D.
Nile perch
E.
Murrels
Kerala PMT 2010
Q63
Errorless
Organic Evolution and Speciation
MCQ
Single step large mutation leading to speciation is also called
A.
Founder effect
B.
Saltation
C.
Branching descent
D.
Natural selection
E.
Adaptive radiation
MP PMT 2010
Q64
Errorless
Evidences of Evolution
MCQ
The first seed plants appeared during
A.
Silurian era
B.
Devonian era
C.
Carboniferous era
D.
Cretaceous era
AIIMS 2010
Q65
Errorless
Evidences of Evolution
MCQ
Below are listed some pairs of characters. The homologous pair is
A.
Forelimbs of dog and camel
B.
Insect wing and bat wing
C.
Feathers of birds and fins of fish
D.
Lens of vertebrate and arthropod
KCET 2010
Q66
Errorless
Darwinism
MCQ
Aaccording to Darwin, evolution i.....
A.
A sudden but discontinuous process
B.
A slow, gradual and continuous process
C.
A slow, sudden and discontinuous process
D.
A slow and discontinuous process
AIIMS 2010
Q67
Errorless
Darwinism
MCQ
Appearance of dark-coloured peppered moths among the light-coloured ones as a result of increased industrial pollution is an example of
A.
Disruptive selection
B.
Stabilishing selection
C.
Directional selection
D.
None of the above
AIIMS 2010
Q68
Errorless
Darwinism
MCQ
If Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall be correct according to it
A.
Useful organs become strong and developed while useless organs become extinct. These organs help in struggle for survival
B.
Size of organs increase with ageing
C.
Development of organs is due to willpower
D.
There should be some physical basis of inheritance
J & K CET 2010
Q69
Errorless
Evolution of Man
MCQ
Humans belong to the family
A.
Hominidae
B.
Pongidae
C.
Hylobatidae
D.
Ramapithecus
AIIMS 2010
Q70
Errorless
Self Evaluation Test
MCQ
What does the term 'reproductive isolation' refers to
A.
An individual is unable to fertilise itself
B.
Genes are not exchanged between two populations
C.
Individuals from two population never mate
D.
Individuals from two populations never produce offsprings
NCERT; MP PMT 2009
Q71
Errorless
ORIGIN OF LIFE
MCQ
Life originated in
A.
Precambrian era
B.
Proterozoic era
C.
Mesozoic era
D.
Caenozoic era
CPMT 2009
Q72
Errorless
Organic Evolution and Speciation
MCQ
Ultimate source of organic variation is the process which provide raw materials for evolution is Or
The concept of sudden genetic change which breeds true in a species is represented as [MP PMT 1996]
A.
Sexual reproduction
B.
Meiosis
C.
Mutation
D.
Independent assortment
CPMT 2009
Q73
Errorless
Organic Evolution and Speciation
MCQ
According to the theory of mutation by Hugo de Vries
A.
Only small mutation takes part in variation
B.
Only large mutation takes part in variation
C.
Both small and large mutation cause variation in species
D.
None of the above
AIIMS 2009
Q74
Errorless
Evidences of Evolution
MCQ
Which is a vestigeal organ of python
A.
Nose
B.
Hind limbs
C.
Scales
D.
Teeth
DUMET 2009
Q75
Errorless
Evidences of Evolution
MCQ
Mass extinction at the end of Mesozoic era was probably due to
A.
Continental drift
B.
The collision of earth with large meteorites
C.
Massive glaciations
D.
Change in earth's orbit