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Quiz 6
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Q.1
Age of fishes is .... [ CET Chd. 2011]
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a) Silurian
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b) Ordovician
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c) Devonian
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d) Permian
Explanation
Answer : (c)
Q.2
An isolated population with equal number of blue-eyed and brown eyed individuals was decimated earthquake. Only a few brown eyed individuals survived to form next generation. the change in gene pool is ... .. [ JKCET 2012]
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a) Hardy - Weinberg equilibrium
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b) Blocked gene flow
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c) Founder effect
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d) Bottleneck effect
Explanation
Answer : (d)
Q.3
Which one is not vestigial in humans ... .. [ MPPMT 1994 ]
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a) Tail vertebrae
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b) Vermiform appendix
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c) Muscles of pinnae
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d) Malleus
Explanation
Answer : (d)
Q.4
Theory of mutation by de Vries considers that ... .. [ CPMT 2009]
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a) Only small mutation take part in developing variations
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b) Only large mutation take part in developing variations
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c) Both small and large mutations cause variations
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d) None of the above
Explanation
Answer : (c)
Q.5
Coacervates belong to the category of ... ... [ Pb PMT 2005 ]
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a) Protozoans
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b) Molecular aggregates
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c) Molecular aggregates surrounded by lipid membrane
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d) Cyanobacteria
Explanation
Answer : (b)
Q.6
Ontogeny recapitulates phylogeny. This is ... ... [ JKCMEE 2008 ]
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a) Hardy Weinberg law
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b) Pauling law
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c) Biogenetic law
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d) Thomas law
Explanation
Answer : (c)
Q.7
What is incorrect for evolution? ... .. [ Odisha 2002 ]
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a) Fossils provide important information
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b) Early development stages of higher animals are similar
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c) Fore limbs of cows and wings of birds are homologous
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d) Variations among individuals are not important in natural selection
Explanation
Answer : (d)
Q.8
Mammals like Whale, Dolphin, Bat, Monkey and Horse have some common characters but also show conspicuous differences. this is due to phenomenon of ... ... [ MPPMT 2004 ]
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a) Divergence
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b) Convergence
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c) Genetic drift
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d) Normalisation
Explanation
Answer : (a)
Q.9
Hybrid sterility is found in ... ... [ Kerals 2000 ]
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a) Horse
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b) Hinny
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c) Lion
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d) Crocodile
Explanation
Hybrid sterility is defined as the inhibition or suppression of the reproductive. capacity of F1 or later generation hybrids between genetically different strains or. populations, usually belonging to different species. A hinny is a domestic equine hybrid that is the offspring of a male horse (a stallion) and a female donkey (a jenny). Answer : (b)
Q.10
Balancing selection is connected with successful reproduction of ... .. [ DPMT 2011]
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a) Homozygous recessives
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b) Homozygous dominants
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c) Heterozygous individuals
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d) All the above
Explanation
Answer : (c)
Q.11
Analogous organs are a result of ... .. [ HPPMT 2011]
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a) Divergent evolution
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b) Genetic drift
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c) Convergent evolution
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d) Divergent evolution
Explanation
Answer : (c)
Q.12
Possibility of occurrence of coal in an area is determined by study of ... ... [ BHU 2002 ]
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a) Microfossils
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b) Ecology
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c) Economic Botany
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d) Mining contents
Explanation
Answer : (a)
Q.13
Lamarck’s theory of evolution is known as ... .. [ AFMC 1997]
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a) Natural selection
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b) Inheritance of acquired characters
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c) Survival of the fittest
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d) Mutation theory
Explanation
Answer : (b)
Q.14
Which is sequenced during study of phylogeny? ... ... [ CBSE 2002 ]
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a) mRNA
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b) rRNA
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c) tRNA
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d) DNA
Explanation
The ribosome is an ancient and essential component of cellular organisms, and its form and function is consistent across the spectrum of living things. A key aspect of ribosomes and ribosomal RNAs is that their function is very highly “conserved”, or maintained by natural selection, between and among species. Answer : (d)
Q.15
Presence of vestigial organs supports .. ... [ EAMCET 1996 ]
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a) Natural selection
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b) Germplasm theory
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c) Evolution but not Lamarck's theory
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d) Synthetic theory
Explanation
Answer : (c)
Q.16
In which era had life not originated ... ... [ AFMC 1999]
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a) Palaeozoic
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b) Archaeozoic
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c) Azoic
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d) Mesozoic
Explanation
Answer : (c)
Q.17
Best description of natural selection is ... ... [ Pb PMT 2005]
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a) Survival of the fittest
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b) Struggle for existence
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c) Change in proportion of variations within population
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d) Reproductive success of the members of a population best adapted to the environment
Explanation
Answer : (d)
Q.18
"Human population grows in geometric ratio while food materials increases in arithmetic proportion". It is a statement from ... .. [ kerala 2001 ]
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a) Darwin
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b) Bateson
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c) Amritya Sen
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d) Malthus
Explanation
Answer : (d)
Q.19
According to Darwin which one is of much importance in formation of species ... .. [ Manipur 2006]
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a) Over-production
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b) Survival of the fittest
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c) Struggle for existence and variations
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d) Inheritance of acquired characters
Explanation
Answer : (d)
Q.20
Darwin could not properly explain the theory of evolution because of lack of ... .. [ orissa 2009]
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a) Evidences
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b) Speciation
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c) Variations
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d) Genetics
Explanation
Answer : (d)
Q.21
Two species of different genealogy show resemblance due to similar adaptation. the phenomenon is ... .. [ CBSE 2007]
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a) Convergent evolution
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b) Divergent evolution
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c) Micro-evolution
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d) co-evolution
Explanation
Answer : (a)
Q.22
Modern theory of evolution is based on ... .. [ Pb. PMT 2003]
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a) Mutations
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b) Genetic recombination
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c) Natural selection
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d) All the above
Explanation
Answer : (d)
Q.23
Existence of Coal/ petroleum can be known from study of ... ... [ AMU 1998 ]
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a) Ecology
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b) Economic Botany
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c) Palaeobotany
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d) Bacteriology
Explanation
Answer : (c)
Q.24
Who was awarded three prizes, regarded as triple crown of biology ... .. [ HPPMT 2011]
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a) G.N. Ramchandran
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b) Camillo Golgi
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c) Ernst Mayr
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d) Carolus Linnaeus
Explanation
Answer : (c)
Q.25
Choose the correct sequence during formation of chemicals on early earth ... .. [ CBSE 1996 ]
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a) Ammonia, Water, Nucleic acid, Protein
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b) Ammonia, Proteins, Carbohydrates, Nucleic acid
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c) Ammonia, Nucleic acid, Proteins, Carbohydrates
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d) Proteins, Carbohydrate, Water, Nucleic acid
Explanation
Answer : (b)
Q.26
Tasmanian Wolf is a marsupial while Wolf is a placental mammal. This shows ... ...
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a) Convergent evolution
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b) Divergent evolution
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c) Parallelism
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d) Inheritance of acquired characters
Explanation
Answer : (a)
Q.27
Who gave the principle that population tends to multiply more rapidly than food supply ... .. [ CBSE 1995]
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a) Darwin
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b) Malthus
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c) Lamarck
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d) Haldane
Explanation
Answer : (b)
Q.28
Phenomenon of industrial melanism demonstrates ... ... [ AIIMS 1998 ]
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a) Geographical isolation
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b) Natural selection
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c) Reproductive isolation
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d) Transer
Explanation
Answer : (b)
Q.29
Microspheres possessed a membrane of ... ... [ DPMT 2008]
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a) Lipid and protein
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b) lipid
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c) Carbohydrates
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d) Fats
Explanation
Answer : (b)
Q.30
Lederberg's replica experiment is connected with .. ... [ Pb PMT 1997]
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a) Adaptation
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b) Evolution
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c) Genetics
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d) Artifical selection
Explanation
Answer : (a)
Q.31
Organs that performed same function but are not similar in structural details and origin are called ... .. [ JKCEE 2010 ]
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a) Analogous organs
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b) Homologous organs
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c) Vestigial organs
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d) None of these
Explanation
Answer : (a)
Q.32
The use and disuse principle of evolution or theory of "inheritance of acquired characters" was proposed by ... .. [ AIIMS 1999]
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a) Hugo de Vries
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b) Lamarck
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c) Weismann
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d) Darwin
Explanation
Answer : (b)
Q.33
Assertion: Comparative biochemistry provides a strong evidence in favour of common ancestry of living beings Reason: Genetic code is universal.
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (b)
Q.34
Age of man in geology is ...
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a) Proterozoic
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b) Mesozoic
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c) Coenozoic
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d) Psychozoic
Explanation
Answer : (d)
Q.35
Who demonstrated that life comes from life with the help of flask with boiled broth ? .... [ CET Chd 1999 ]
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a) Redi
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b) Pasteur
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c) Van Helmont
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d) Arrhenius
Explanation
Answer : (b)
Q.36
A vestigial tooth is ... ... [ DPMT 1999 ]
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a) Incisor
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b) Molar
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c) Premolar
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d) Canine
Explanation
Answer : (b)
Q.37
First mammals are found in era - periods
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a) Permian ... ... Palaeozoic
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b) Triassic ..... Mesozoic
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c) Tertiary ... ..Cenozoic
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d) Paleoarchean ... ... Archean
Explanation
Answer : (b)
Q.38
Theory of used and disuse was propounded by ... .. [ DPMT 2003 ]
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a) Wallace
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b) Lamarck
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c) Darwin
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d) De Vries
Explanation
Answer : (b)
Q.39
Connecting link between chordates and non-chordates is ... .
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a) Peripatus
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b) Balanoglossus
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c) Sphenodon
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d) Tachyglossus
Explanation
Answer : (b)
Q.40
Which one is incorrect ... ... [ ODisha 2004 ]
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a) Wings of insects and birds are analogous
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b) Wings of bat and birds are homologous
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c) Wings of insect and bat are analogous
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d) Wings of insect and birds are homologous
Explanation
Answer : (d)
Q.41
Most important theory of general biology was proposed by ... .. [ AIIMS 1991]
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a) Mendel and Morgan
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b) Beadle and Tatum
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c) Watson and Crick
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d) Darwin and Wallace
Explanation
Answer : (d)
Q.42
Which one supports Darwin's concept of natural selection? [ CBSE 2005]
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a) Development of transgenic animals
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b) Production of Dolly sheep by cloning
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c) Prevalence of pesticide resistant insects
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d) Development of organs from stem cells for organ transplantation
Explanation
Answer : (c)
Q.43
Homologous organs show ... .. [ BHU 1999 ]
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a) Divergent evolution
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b) Convergent evolution
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c) Parallel evolution
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d) Both B and C
Explanation
Answer : (a)
Q.44
Analogous organs are ... ... [ BHU 1994 ]
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a) Different origin but similar functions
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b) Common origin and common functions
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c) Different origin and different functions
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d) Common origin but different functions
Explanation
Answer : (a)
Q.45
Protobiogenesis occurred ... ... [ AFMC 1999 ]
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a) 1.2 billion years ago
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b) 2.0 billion years ago
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c) 2.5 billion years ago
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d) More than 3.5 billion years ago
Explanation
Answer : (d)
Q.46
Archaeopteryx shows origin of ... ... [ Pb PMT 1997 ]
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a) Birds from reptiles
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b) Mammals from reptiles
0%
c) Reptiles from amphibians
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d) Birds from amphibians
Explanation
Answer : (a)
Q.47
Reproduction can occur within members of a .... .. [ AMU 2005]
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a) Genus
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b) Species
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c) Family
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d) Order
Explanation
Answer : (b)
Q.48
Some bacteria can grow in streptomycin containing medium due to ... ... [ CBSE 2002]
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a) Induced mutation
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b) Natural selection
0%
c) Reproductive isolation
0%
d) Mimicry
Explanation
Answer : (b)
Q.49
Sudden and heritable change in a character/ gene of an organism is ... .. [ JKCMEE 2005 ]
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a) Selection
0%
b) Heterosis
0%
c) Inbreeding
0%
d) Mutation
Explanation
Answer : (d)
Q.50
Wings of birds and bat are ... .. [ Kerala 2003 ]
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a) Homologous with no analogy
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b) Analogous with no homology
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c) Neither homologous nor analogous
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d) Both homologous and analogous
Explanation
Answer : (d)
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