The leydig cells secrete : from Biology NEET Year 2006 Free Solv

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


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52.

The leydig cells secrete :

  • oestrogen

  • testosterone

  • progesterone

  • corticosterone


B.

testosterone

Leydig cells are found in testes of males. ICSH or Interstitial Cells Stimulating Hormone is secreted by anterior lobe of pituitary gland. It stimulates leydig cells to secrete male hormone testosterone.


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53.

Outgrowth developing along with hilum of the seed is:

  • Plumule

  • Radicle

  • Strophiole

  • Perisperm


54.

Removal of top fertile soil by wind or water is :

  • Siltation

  • Soil erosion

  • Weathering of soil

  • Leaching


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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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