101. Homo sapiens evolved during

A Pleistocene
B Oligocene
C Pliocene
D Miocene
Answer :   Pliocene
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102. Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?
(1) Darwin’s Finches of Galapagos islands.
(2) Herbicide resistant weeds.
(3) Drug resistant eukaryotes.
(4) Man-created breeds of domesticated animals like dogs.

A (1) and (3)
B (2), (3) and (4)
C only (4)
D only (1)
Answer :   (2), (3) and (4)
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103. During the course of origin of life what was the sequence of substances which appeared on earth

A Water, oxygen, nucleic acids, enzymes
B Amino acids, ammonia, phosphates, nucleic acids
C Glucose, amino acids, nucleic acids, proteins
D Ammonia, Amino acids, proteins, nucleic acids
Answer :   Ammonia, Amino acids, proteins, nucleic acids
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104. Which one of the following describes correctly the homologous structures ?

A Organs appearing only in embryonic stage and disappearing later in the adult
B Organs with anatomical similarities, but performing different functions
C Organs with anatomical dissimilarities, but performing same function
D Organs that have no function now, but had an important function in ancestors
Answer :   Organs with anatomical similarities, but performing different functions
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105. According to Haeckel's biogenetic law

A Development of individual metazoan shown embryonic characters of ancestors.
B Ontogeny repeats phylogeny
C Germplasm is immorta!
D Every organism is produced by its parents
Answer :   Ontogeny repeats phylogeny
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106. The earliest fossil form in the phylogeny of Horse is

A Merychippus
B Mesohippus
C Eohippus
D Equus
Answer :   Eohippus
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107. The homologous organs are those that show similarity in

A size
B origin
C function
D appearance
Answer :   origin
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108. Identify the correct sequence in which the following substances have appeared during the course of evolution of life on earth

A Glucose, amino acids, nucleic acids, proteins
B Ammonia, amino acids, proteins, nucleic acids
C Water, amino acids, nucleic acids, enzymes
D Amino acids, ammonia, phosphates, nucleic acids
Answer :   Ammonia, amino acids, proteins, nucleic acids
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109. Adaptive radiation refers to

A evolution of different species from a common ancestor
B migration of members of a species to different geographical areas
C power of adaptation in an individual to a variety of environments
D adaptations due to geographical isolation
Answer :   evolution of different species from a common ancestor
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110. Which is vestigial organ in man

A Pinna
B Pinna muscles
C Ileum
D Teeth
Answer :   Pinna muscles
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Practice More MCQ Question on Biology Section

BotanyThe Living WorldBiological ClassificationPlant KingdomMorphology of Flowering PlantsAnatomy of Flowering PlantsCell: The Unit of LifeCell Cycle and Cell DivisonTransport in PlantsMineral NutritionPhotosynthesis in Higher PlantsRespiration in PlantsPlant Growth and DevelopmentReproduction in OrganismsSexual Reproduction in Flowering PlantsPrinciples of Inheritance and VariationMolecular Basis of InheritanceStrategies for Enhancement in Food ProductionMicrobes in Human WelfareOrganisms and PopulationsEcosystemBiodiversity and ConservationEnvironmental IssuesBotany Miscellaneous
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