Subject

Biology

Class

NEET Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

51.

In the life scale of mosquito, comma shaped stage is:

  • larval stage

  • pupal stage

  • imago stage

  • none of these


52.

The leydig cells secrete :

  • oestrogen

  • testosterone

  • progesterone

  • corticosterone


53.

Outgrowth developing along with hilum of the seed is:

  • Plumule

  • Radicle

  • Strophiole

  • Perisperm


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54.

Removal of top fertile soil by wind or water is :

  • Siltation

  • Soil erosion

  • Weathering of soil

  • Leaching


B.

Soil erosion

The loss of top soil or disturbence of soil structure by wind or water is called soil erosion.


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55.

Acid rain are produced by:

  • excess NO2 and SO2 from burning fossil fuels

  • excess production of NH3 by industry and coal gas

  • excess release of carbon monoxide by incomplete combustion

  • excess formation of CO2 by coinbustion and animal respiration


56.

The principal cereal crop of India/Asia is :

  • Sorghum

  • barley

  • wheat

  • rice


57.

Major coffee producing state of India is :

  • Tamil Nadu

  • Kerala

  • Karnataka

  • Andhra Pradesh


58.

Two or more species occupying same or ovarlapping areas are :

  • sympatric

  • sibling

  • sub species

  • allopatric


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59.

A student wants to study metaphasic behaviour of chromosomes in a living cell. The technique most suitable is :

  • phase contrast microscope

  • x-ray microscope

  • cell fractionation

  • scanning electron microscope


60.

Grassland with scattered trees is :

  • savanna

  • deciduous forest

  • evergreen forest

  • tropical rain forest


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