Biology, asked by nimak, 1 year ago

Scientist whi gave theory of origin of life on the earth and also write about the theory

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Answered by CanDyCaneMiSSy
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➡ BRITISH SCIENTIST J B S HELDAY suggested THAT THE SIMPLE IN ORGANIC MOLECULES LIKE AMONIA(NH3),HYDROGEN SULPHIDE (H2S) ,METHANE (CH4) ETC...WHICH WERE PRESENT ON THE EARTG COULD HAVE CONVERTED THESE SIMPLE INORGANIC MOLECULES INTO COMPLEX ORGANIC MOLECULES WHICH ARE NECESSARY FOR LIFE.

THESE COMPLEX ORGANIC MOLECULES MUST HAVE JOINT TO FORM FIRST PRIMITIVE LIVING
ORGANISM THAT ORIGNATED IN SEA WATER i.e CYNOBACTERIA OR BLUE GREEN ALGAE.

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Answered by Pooja0007
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origin of life can be explained by following theories 1)theory of special creation -this is the oldest of all theories Spanish monk father Sudrez proposed this theory. it is supported by religions and civilization. according to this theory all the living beings on the earth were created by God or by some supernatural power
2)Cosmozoic theory- it is also known as the panspermia theory given by RICHTER in 1865 . according to this theory life on earth came from a distant planet in the form of spores or microorganism.it was called cosmozoa or panspermia which were preserved inside meteorites(masses of matter from outer space). These meteorites strucks the barren earth to release the cosmozoa and helped in development of various creatures
3) Theory of spontaneous generation or theory of abiogenesis -it is also known as the theory of autobiogenesis. According to this theory life originated from non living material spontaneously. It was initially putforth by Greek philosopher in 600 B.C it was also supported by Aristotle .
Louis Pasture disproved the theory of spontaneous generation and gave the scientific explanation that life originated only from pre-existing life or Biogenesis .
4)Theory of biogenesis -
Francisco Redi (1621-1697), Spallanzani(1729-1799), and Louis Pasture (1822-1895) are the three famous scientists who conducted classical experiment to disproved the theory of abiogenesis
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