Multiple Choice Questions

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Which one of the following is vestigeal organ of human

  • Hair

  • Intestine

  • Wisdom teeth

  • Muscle of glottis


C.

Wisdom teeth

Vestigeal organs are present in reduced form and are of no use to the animal in which they are present. Man has 180 vestigeal organs. e.g., nictitating membrane, vermiform appendix, wisdom tooth, muscle of pinna and forhead, mammary glands in male etc.


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Example of analogous organs is :

  •  wings of bird and insect

  • forelimbs of horse and man

  • teeth of elephant and man

  • none of the above


Dinosaurs become extinct in

  • Permian age

  • Triassic period

  • Jurassic period

  • Cretaceous period


Which of the following as a living fossil 

  •  Pinus 

  • Gnetum

  • Ginkgo 

  • Riccia


The first animal domesticated by primitive man was

  • dog

  • horse

  • cat

  • cow


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Stanley Miller performed an experiment to prove the origin of life. They took gases NH3 and H2 along with

  • Nand H2O

  • H2O and CH4

  • CH4 and N2

  • CO2 and NH3


Documented microfossils have been found that are as old as

  • 2.5 billion years

  • 1.5 billion years

  • 3.5 billion years

  • 2.5 million years


Set which includes only analogous organs is

  • wings of butterfly, housefly and bat

  • hindlegs of horse, grasshopper and bat

  • wings of butterfly and wingspread of bat and birds

  • mandibles of cockroach, mosquito and honey bee


Which one is not correct?

  • Human - Ureotelic

  • Birds - Uricotelic

  • Lizards - Uricotelic

  • Whale - Ammonotelic


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During starvation what will be sequence of ending of food stuffs ?

  • Carbohydrates - Fat- Protein

  • Carbohydrate - Protein - Fat

  • Fat - Protein - Carbohydrate

  • Fat - Carbohydrate- Protein


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