WELCOME Shri Surwase V P Yeshwantrao Chavan College

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WEL-COME Shri. Surwase V. P Yeshwantrao Chavan College, Tuljapur

WEL-COME Shri. Surwase V. P Yeshwantrao Chavan College, Tuljapur

Class: B. Sc II yr, paper no. : Paper name: Ecology

Class: B. Sc II yr, paper no. : Paper name: Ecology

ORIGIN OF EARTH The earth was formed from the sun about 5000 million years

ORIGIN OF EARTH The earth was formed from the sun about 5000 million years ago The temperature was very high and was about 5000 -6000 c The earth was getting cooled the heavy elements occupied by core of earth The lightest element like helium hydrogen and oxygen nitrogen carbon etc. occupied the atmosphere of earth The chemical changes leading formation of life is called chemical evolution of origin of life

FORMATION OF H O, NH 2 3 AND CH 4 The primitive earth contained

FORMATION OF H O, NH 2 3 AND CH 4 The primitive earth contained large amount of hydrogen, nitrogen and carbon and oxygen Of these hydrogen very active It combined with nitrogen to form ammonia(NH 3) with oxygen to form water(H 2 O) and with carbon to form methane(CH 4)

FORMATION OF MICROMOLECULES The amino acids fatty acids , monosaccharides purine pyramidne adenosine monophosphate

FORMATION OF MICROMOLECULES The amino acids fatty acids , monosaccharides purine pyramidne adenosine monophosphate adenosine monophsphate adinodiphosphat colidal diphosphate appearing in the sea water These where distinct bodies which did not makes with the surrounding the sea water

FORMATION OF MACROMOLECULE The micromolecule where combined in various ways to form large molecule

FORMATION OF MACROMOLECULE The micromolecule where combined in various ways to form large molecule called macromolecule For example protein lipid polysaccharides nucleic acid nucleo protein etc. The combination of smaller molecule in to macromolecule is called polymerisation

FORMATION OF NUCLEIC ACIDS From phosphoric acid sugar, urines and pyramids formed the nucleic

FORMATION OF NUCLEIC ACIDS From phosphoric acid sugar, urines and pyramids formed the nucleic acid The nucleotide where linked together in different combination to produce to nucleic acid

FORMATION OF NUCLEO PROTEINS The nucleic acid and protein combined together to form larger

FORMATION OF NUCLEO PROTEINS The nucleic acid and protein combined together to form larger molecule called nucleo proteins

FORMATION OF NUCLEO PROTEINS

FORMATION OF NUCLEO PROTEINS

COACERVATION The large molecule underwent aggregation and precipitation in the sea These aggregation and

COACERVATION The large molecule underwent aggregation and precipitation in the sea These aggregation and precipitation lead to the organized structure called coacervation

COACERVATION

COACERVATION

PRE CELLS OR PROTO CELLS The earliest first living unit are called photocells or

PRE CELLS OR PROTO CELLS The earliest first living unit are called photocells or precells protobions These exhibited reproduction by budding and mutation The protocell were anarobic

PRE CELLS TO CELLS The protocells developed DNA and RNA system The look lied

PRE CELLS TO CELLS The protocells developed DNA and RNA system The look lied bacteria and virus these have ability for self duplication and protein synthesis

Thank you

Thank you