← Back to Biology

Evolution

126 Questions
All Exams NEET AIIMS
2013 NEET MCQ
NEET 2013 (Karnataka)
Genetic variation in a population arises due to :
A.
Reproductive isolation and selection
B.
Mutations only
C.
Mutations as well as recombination
D.
Recombination only
2013 NEET MCQ
NEET 2013
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as :
A.
Genetic drift
B.
Genetic load
C.
Genetic flow
D.
Random mating
2013 NEET MCQ
NEET 2013
The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called :
A.
Convergent evolution
B.
Adaptive radiation
C.
Natural selection
D.
Non-random evolution
2013 NEET MCQ
NEET 2013
According to Darwin, the organic evolution is due to -
A.
Reduced feeding efficiency in one species due to the presence of interfering species
B.
Competition within closely related species
C.
Intraspecific competition
D.
Interspecific competition
2013 NEET MCQ
NEET 2013
The tendency of population to remain in genetic equilibrium may be disturbed by :
A.
lack of random mating
B.
random mating
C.
lack of migration
D.
lack of mutations
2013 NEET MCQ
NEET 2013
The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function, This is an example of :
A.
Homologous organs that have evolved due to divergent evolution
B.
Analogous organs that have evolved due to convergent evolution
C.
Homologous organs that have evolved due to convergent evolution
D.
Analogous organs that have evolved due to divergent evolution
2012 NEET MCQ
AIPMT 2012 Mains
The idea of mutations was brought forth by :
A.
Charles Darwin, who observed a wide variety of organisms during sea voyage
B.
Hugo do Vries, who worked on evening primrose
C.
Gregor Mendol, who worked on Pisum sativum
D.
Hardy Weinberg, who worked on allele frequencies in a population
2012 NEET MCQ
AIPMT 2012 Prelims
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors ?
A.
Uprigth posture
B.
Increasing cranial capacity
C.
Shortening of jaws
D.
Binocular vision
2012 NEET MCQ
AIPMT 2012 Prelims
Which one of the following options gives one correct example each of convergent evolution and divergent evolution ?
A.
Convergent evolution $ \to $ Thorns of Bougainvillia and tendrils of cucurbita & Divergent evolution $ \to $ Eyes of Octopus and mammals
B.
Convergent evolution $ \to $ Eyes of octopus & Divergent evolution $ \to $ Bones of forelimpbs of mammals and vertebrates
C.
Convergent evolution $ \to $ Thorns of Bougainvillia and ten drils of cucurbita & Divergent evolution $ \to $ Wings of butterflies and birds
D.
Convergent evolution $ \to $ Bones of forelimbs of vertebrates & Divergent evolution $ \to $ Wings of butterfly and birds
2012 NEET MCQ
AIPMT 2012 Prelims
Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
A.
divergent evolution
B.
Natural selection
C.
Migration
D.
Adaptive radiation
2012 NEET MCQ
AIPMT 2012 Prelims
The extinct human who lived 1,00,000 to 40,000 years ago, in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating fore heads, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was :
A.
Neanderthal human
B.
Homo habilis
C.
Cro-magnan humans
D.
Ramapithecus
2011 NEET MCQ
AIPMT 2011 Prelims
What was the most significant trend in the evolution of modern man (Homo sapiens) from his ancestors ?
A.
Uprigth posture
B.
Shortening of jaws
C.
Binocular vision
D.
Increasing cranial capacity
2010 NEET MCQ
AIPMT 2010 Mains
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements
– Statements :
(A) Wings of butterfly and birds look alike and are the results of (i) , evolution
(B) Miller showed that CH4, H2, NH3 and (i), when exposed to electric discharge in a flask resulted in formation of (ii) .
(C) Vermiform appendix is a (i) organ and an (ii) evidence pf evolution.
(D) According to Darwin evolution took place due to (i) and (ii) of the fittest.
A.
(C) - (i) vestigial, (ii) anatomical, (D) - (i) mutations, (ii) multiplication
B.
(D) - (i) small variations, (ii) survival, (A) - (i) convergent
C.
(A) - (i) convergent, (B) - (ii) oxygen, (ii) nucleosides
D.
(B) - (i) water vapour, (ii) amino acids, (C) - (i) rudimentary (ii) anatomical
2010 NEET MCQ
AIPMT 2010 Mains
The most apparent changes during the evolutionary history of Homo sapiens is traced in
A.
Remarkable increase in the brain size
B.
Walking upright
C.
Loss of body hair
D.
Shortening of the jaws
2010 NEET MCQ
AIPMT 2010 Prelims
Darwin's finches are a good example of –
A.
Convergent evolution
B.
Connecting link
C.
Industrial melanism
D.
Adaptive radiation
2009 NEET MCQ
AIPMT 2009
In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of -
A.
Natural selection whereby the darker forms were selected.
B.
Protective mimicry
C.
Inheritance of darker colour character acquired due to the darker environment
D.
Appearance of the darker coloured individuals due to very poor sunlight
2009 NEET MCQ
AIPMT 2009
Peripatus is a connecting link between :
A.
Ctenophora and Platyhelminthes
B.
Mollusca and Echinodermata
C.
Coelenterata and Porifera
D.
Annelida and Arthropoda
2008 NEET MCQ
AIPMT 2008
Darwin's finches are a good example of –
A.
Convergent evolution
B.
Adaptive radiation
C.
Connecting link
D.
Industrial melanism
2008 NEET MCQ
AIPMT 2008
Thorn of Bougainvillea and tendril of Cucurbita are examples of:
A.
analogous organs
B.
homologous organs
C.
vestigial organs
D.
retrogressive evolution
2008 NEET MCQ
AIPMT 2008
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
A.
They could separate combinations of molecules from the surroundings
B.
They were able to reproduce
C.
They were partially isolated from the surruounding
D.
They could maintain an internal environment
2008 NEET MCQ
AIPMT 2008
Which one of the following scientist's name is correctly matched with the theory put fourth by him?
A.
Mendel — Theory of pangenesis
B.
deVries — Natural selection
C.
Pasteur — Inheritance of acquired characters
D.
Weismann — Theory of continuity of germplasm
2007 NEET MCQ
AIPMT 2007
When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:-
A.
Microevolution
B.
Convergent evolution
C.
Co-evolution
D.
Divergent evolution
2007 NEET MCQ
AIPMT 2007
Which one of the following statements is correct?
A.
Ontogeny repeats phylogeny.
B.
There is no evidence of the existence of gills during embryogenesis of mammals.
C.
Stem cells are specialized cells.
D.
All plant and animal cells are totipotent.
2007 NEET MCQ
AIPMT 2007
Adaptive radiation refers to:-
A.
Adaptations due to Geographical isolation
B.
Migration of members of a species to different geographical areas
C.
Evolution of different species from a common ancestor
D.
Power of adaptation in an individual to a variety of environments
2007 NEET MCQ
AIPMT 2007
The concept of chemical evolution is based on-
A.
Crystallization of chemicals
B.
Effect of solar radiation on chemicals
C.
Possible origin of life by combination of chemicals under suitable environmental conditions
D.
Interaction of water, air and clay under intense heat
2007 NEET MCQ
AIPMT 2007
The finches of Galapogas islands provide an evidence in favour of-
A.
Special Creation
B.
Biogeographical Evolution
C.
Evolution due to Mutation
D.
Retrogressive Evolution
2006 NEET MCQ
AIPMT 2006
Praying mantis is a good example of-
A.
Warning colouration
B.
Camouflage
C.
Mullerian mimicry
D.
Social insects
2006 NEET MCQ
AIPMT 2006
Jurassic period of the Mesozoic era characterized by-
A.
Radiation of reptiles and origin of mammal like reptiles
B.
Flowering plants and first dinosaurs appear
C.
Gymnosperms are dominant plants and first birds appear
D.
Dinosaurs become extinct and angiosperms appear
2006 NEET MCQ
AIPMT 2006
Which one of the following amino-acids was not found to be synthesized in Miller's experiment ?
A.
Aspartic acid
B.
Alanine
C.
Glycine
D.
Glutamic acid
2006 NEET MCQ
AIPMT 2006
An important evidence in favour of organic evolution is the occurrence of-
A.
Homologous organs onl
B.
Homologous and vestigial organs
C.
Homologous and analogous organs
D.
Analogous and vestigial organs
2005 NEET MCQ
AIPMT 2005
Which of the following is not true for a species ?
A.
Variations occur among members of a species
B.
Gene flow does not occur between the populations of a species
C.
Each species is reproductively isolated from every other species
D.
Members of a species can interbreed
2005 NEET MCQ
AIPMT 2005
At a particular locus, frequency of 'A' allele is 0.6 and that of 'a' is 0.4. What would be the frequency of heterozygotes in a random mating population at equilibrium ?
A.
0.48
B.
0.24
C.
0.36
D.
0.16
2005 NEET MCQ
AIPMT 2005
There are two opposing views about origin of modern man. According to one view Homo erectus in Asia were the ancestors of modern man. A study of variation of DNA however suggested African origin of modern man. What kind of observation of DNA variation could suggest this ?
A.
Variation only in Asia and no variation in Africa
B.
Similar variation in Africa and Asia
C.
Greater variation in Africa than in Asia
D.
Greater variation in Asia than in Africa
2005 NEET MCQ
AIPMT 2005
Which of the following is the relatively most accurate method for dating of fossils ?
A.
Radio-carbon method
B.
Uranium-lead method
C.
Potassium–argon method
D.
Electron-spin resonance method
2005 NEET MCQ
AIPMT 2005
Which one of the following phenomena supports Darwin's concept of natural selection in organic evolution ?
A.
Prevalence of pesticide resistant insects
B.
Development of organs from 'stem' cells for organ transplantation
C.
production of 'Dolly', the sheep by cloning
D.
Development of transgenic animals
2005 NEET MCQ
AIPMT 2005
Which one of the following experiments suggests that simplest living organisms could not have originated spontaneously from non-living matter ?
A.
Meat was not spoiled, when heated and kept sealed in a vessel
B.
Larva cound appear in decaying organic matter
C.
Microbes appeared form unsterilized organic matter
D.
microbes did not appear in stored meat
2005 NEET MCQ
AIPMT 2005
De Vries gave his mutation theory on organic evolution while working on -
A.
Althea rosea
B.
Oenothera lamarckiana
C.
Pisum sativum
D.
Drosophila melanogaster
2004 NEET MCQ
AIPMT 2004
What kind of evidence suggested that man is more closely related with chimpanzee than with other hominoid apes ?
A.
Evidence from fossil remains and the fossil mitochondrial DNA alone
B.
Evidence from DNA extracted from sex chromosomes, autosomes
C.
Comparison of chromosomes morphology only
D.
Evidence from DNA from sex chromosomes only
2004 NEET MCQ
AIPMT 2004
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms includes -
A.
Electron spin resonance (ESR) & fossil DNA
B.
Study of carbohydrates/proteins in fossils
C.
Study of the conditions of fossilization
D.
Study of carbohydrates/proteins in rocks
2004 NEET MCQ
AIPMT 2004
According to oparin, which one of the following was not present in the primitive atmosphere of the earth ?
A.
Water vapour
B.
Oxygen
C.
Methane
D.
Hydrogen
2004 NEET MCQ
AIPMT 2004
Which one of the following is living fossil ?
A.
Cycas
B.
Moss
C.
spirogyra
D.
Saccharomyces
2004 NEET MCQ
AIPMT 2004
Diversification in plant life appeared
A.
By seed dispersal
B.
Due to abrupt mutations
C.
Due to long periods of evolutionary changes
D.
Suddenly on earth
2003 NEET MCQ
AIPMT 2003
Which one of the following describes correctly the homologous structures ?
A.
Organs with anatomical dissimilarities but performing same function
B.
Organs that have no function now, but had an important function in ancestors
C.
Organs with anatomical similarities, but performing different func
D.
Organs appearing only in embryonic stage and disappearing later in the adult
2003 NEET MCQ
AIPMT 2003
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner : -
A.
Selection
B.
Random drift
C.
Mutations
D.
Migration
2003 NEET MCQ
AIPMT 2003
Convergent evolution is illustrated by : -
A.
Bacterium and protozoan
B.
Rat and dog
C.
Dogfish and whale
D.
Starfish and cuttle fish
2003 NEET MCQ
AIPMT 2003
Which one of the following sequences was proposed by Darwin and Wallace for organic evolution ?
A.
Variations, natural selection, overproduction, constancy of population size
B.
Overproduction, constancy of population size, variations, natural selection
C.
Variations, constancy of population size, overproduction, natural selection
D.
Overproduction, variations, constancy of population size, natural selection
2003 NEET MCQ
AIPMT 2003
Darwin in his 'Natural Selection Theory' did not believe in any role of which one of the following in organic evolution ?
A.
Survival of the fittest
B.
Parasites and predators as natural enemies
C.
Discontinuous variations
D.
Struggle for existence
2003 NEET MCQ
AIPMT 2003
Industrial melanism is an example of : -
A.
Darkening of skin due to smoke from industries
B.
Defensive adaptation of skin against ultraviolet radiations
C.
Drug resistance
D.
Protective resemblance with the surroundings
2003 NEET MCQ
AIPMT 2003
Which one of the following is categorised under living fossils ?
A.
Cycas
B.
Metasequoia
C.
Pinus
D.
Selaginella
2003 NEET MCQ
AIPMT 2003
Random genetic drift in a population probably results from
A.
Constant low mutation rate
B.
Interbreeding within this population
C.
Large population size
D.
Highly genetically variable individuals