The presence of diversity at the junction of territories to two d

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 Multiple Choice QuestionsMultiple Choice Questions

61.

During which geological period of evolution did the greatest diversification of life occurred on the earth?

  • Permian

  • Jurassic

  • Cambrian

  • Ordovician


62.

About how long ago was the earth formed

  • 3 billion years ago

  • 10 billion years ago

  • 4.6 billion years ago

  • 20 billion years ago


63.

Total number of bones in the hindlimb of a man is

  • 14

  • 21

  • 24

  • 30


64.

The diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos islands, as observed by Darwin, provides evidence for

  • Origin of species by natural selection

  • Intraspecific Variations

  • Intraspecific competition

  • Interspecific competition


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65.

Age of fishes is also known as

  • Permian Era

  • Silurian Era

  • Devonian Era

  • Ordovician Era


66.

Human ancestors who left cave paintings were

  • Neanderthal man

  • Cro- magnon man

  • Java ape man

  • Peking man


67.

Pneumatic bones are expected to be found in

  • house lizard

  • flying fish

  • pigeon

  • tadpole of frog


68.

Which of the following is not a vestigial structure in Homo sapiens ?

  • Third molar

  • Epiglottis

  • Plica semilunaris

  • Pyrimidalis muscle


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69.

The presence of diversity at the junction of territories to two different habitats is known as

  • bottleneck effect

  • edge effect

  • junction effect

  • Pasteur effect


B.

edge effect

Edge effect are changes in population or community structures that occur at the boundary of two or more habitats.

Bottleneck effect can be defined as the yearly or seasonal phenomenon in which size of a population is reduced severely. 

Pasteur effect is defined as the reduction in the amount of breakdown of respiratory substrate and evolution of carbon dioxide when an anaerobically respiring material is brought in oxygen containing environment.


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70.

Which of the following provides most evident proof of evolution?

  • Fossils

  • Morphology

  • Embryo

  • Vestigial organs


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