Multiple Choice Questions

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Which of the following is not vestigial in man?

  • Tail vertebrae

  • Nails

  • Nicitating membrane

  • Vermiform appendix


B.

Nails

Vestigial organs can be defined as the imperfectly developed, non- functional organs which when compared to ancestral forms were fully developed and functional.

Eg, nicitating membrane, tail vertebrae, vermiform appendix.


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Which of the following provides most evident proof of evolution?

  • Fossils

  • Morphology

  • Embryo

  • Vestigial organs


In rabbit, head of epididymis present at the head of testis is called

  • vas deferens

  • cauda epididymis

  • gubernaculum

  • caput epididymis


Animals undergoes inactive stage during winter, is known as

  • aestivation

  • hibernation

  • adaptation

  • acclimatization


The embryo at 16 celled stage is known as

  • morula

  • gastrula

  • blastula

  • blastomere


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Chromosome complement with 2n - 1 is called

  • monosomy

  • nullisomy

  • trisomy

  • tetrasomy


Small fish get stuck near the bottom of a shark and derives its nutrition from it. This kind of association is called as

  • antibiosis

  • commensalism

  • predation

  • parasitism


the group of Anamniota includes

  • reptiles and birds

  • birds and mammals

  • fishes an amphibians

  • reptiles and mammals


Synsacrum of fowl consists about

  • 29 vertebrae

  • 3 vertebrae

  • 16 vertebrae

  • single vertebrae


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Jumping genes in maize were discovered by

  • Hugo de Vries

  • Barbara McClintock

  • T H Morgan

  • Mendel