Multiple Choice Questions

Advertisement

Animals undergoes inactive stage during winter, is known as

  • aestivation

  • hibernation

  • adaptation

  • acclimatization


B.

hibernation

Hibernation is the inactive stage during winter or the dormancy during winter. It is known as winter sleep.

Aestivation is the dormancy during summer or dry weather. Also, it is the arrangement of parts in flower bud.

Adaptation is the sum total of environmental condition achieved by the organisms in a habitat.

Acclimatization is gradual physiological adaptation in response to environmental changes.


Advertisement

the group of Anamniota includes

  • reptiles and birds

  • birds and mammals

  • fishes an amphibians

  • reptiles and mammals


The embryo at 16 celled stage is known as

  • morula

  • gastrula

  • blastula

  • blastomere


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


Chromosome complement with 2n - 1 is called

  • monosomy

  • nullisomy

  • trisomy

  • tetrasomy


Advertisement

Synsacrum of fowl consists about

  • 29 vertebrae

  • 3 vertebrae

  • 16 vertebrae

  • single vertebrae


Jumping genes in maize were discovered by

  • Hugo de Vries

  • Barbara McClintock

  • T H Morgan

  • Mendel


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

  • vas deferens

  • cauda epididymis

  • gubernaculum

  • caput epididymis


Which of the following is not vestigial in man?

  • Tail vertebrae

  • Nails

  • Nicitating membrane

  • Vermiform appendix


Advertisement

Which of the following provides most evident proof of evolution?

  • Fossils

  • Morphology

  • Embryo

  • Vestigial organs