PHOTOSYNTHESIS
PHOTOSYNTHESIS
IT IS THE MOST IMPORTANT ANABOLIC PROCESS ON EARTH BY WHICH GREEN PLANTS PREPARE THERE FOOD USING CARBONDIOXIDE, WATER IN THE PRESENCE OF SUNLIGHT AND CHLOROPHYL
IT CAN BE WRITTEN AS AN EQUATION -
12H2O + 6 O2 IN THE PRECENCE OF SUNLIGHT AND CHLOROPHYLL = C6H12O6 + 6O2 +6H2O
CHEMOSYNTHESIS
THE PROCESS OF CARBOHYDRATE SYNTHESIS IN WHICH ORGANISMS USE CHEMICAL REACTION TO GET ENERGY THROUGH INORGANIC SUBSTANCES IS CHEMOSYNTHESIS .
FOR EXAMPLE - SULPHUR BACTERIA
PHOTONS
LIGHT IS BELIEVED TO BE STREAM OF TINY PARTICLES CALLED PHOTHONS.
CHLOROPLASTS
CHLOROPLASTS ARE THE GREEN PLASTID WHICH OCCUR IN ALL GREEN PLANTS.
GRANUM
PLATE LIKE STRUCTURES IN CHLOROPLASTS ARE CALLED GRANUM .
CHLOROPHYLL
THEY ARE GREEN PHOTOSYNTHETIC PIGMENTS PRESENT IN ALL AUTOTROPHIC TYPE OF NUTRITION EXCEPT BACTERIAS.
FACTORS REQUIRED FOR PHOTOSYNTHESISES
1)EXTERNAL FACTORS
A)SUNLIGHT
B)CARBONDIOXIDE
C)WATER
D)TEMPERATURE
2)INTERNAL FACTORS
A) CHLOROPHYLL
B)ENZYMES
MECHANISIM OF PHOTOSYNTHESIS
A) LIGHT REACTION
IT OCCURS IN THYLAKOID MEMBRANE OF GRANA .
IT IS A PHOTOCHEMICAL CHANGE .
IN THIS PROCESS CHLROPHYLL ABSORBS LIGHT IN THE FORM OF PHOTONS AND IT GET EXCITED AND ENERGY IS REALISED .
B)DARK REACTION
IT OCCURS IN STORMA .
IT IS A SERIES OF BIOCHEMICAL CHANGES .
IN THIS PROCESS 6 MOLECULES OF CARBONDIOXIDE ABSORBED FROM ATMOSPHERE AND CONVERTED INTO CARBOHYDRATE THROUGH A SERIES OF CHEMICAL REACTION CALLED CALVIN-BENSON CYCLE .
IT IS THE MOST IMPORTANT ANABOLIC PROCESS ON EARTH BY WHICH GREEN PLANTS PREPARE THERE FOOD USING CARBONDIOXIDE, WATER IN THE PRESENCE OF SUNLIGHT AND CHLOROPHYL
IT CAN BE WRITTEN AS AN EQUATION -
12H2O + 6 O2 IN THE PRECENCE OF SUNLIGHT AND CHLOROPHYLL = C6H12O6 + 6O2 +6H2O
CHEMOSYNTHESIS
THE PROCESS OF CARBOHYDRATE SYNTHESIS IN WHICH ORGANISMS USE CHEMICAL REACTION TO GET ENERGY THROUGH INORGANIC SUBSTANCES IS CHEMOSYNTHESIS .
FOR EXAMPLE - SULPHUR BACTERIA
PHOTONS
LIGHT IS BELIEVED TO BE STREAM OF TINY PARTICLES CALLED PHOTHONS.
CHLOROPLASTS
CHLOROPLASTS ARE THE GREEN PLASTID WHICH OCCUR IN ALL GREEN PLANTS.
GRANUM
PLATE LIKE STRUCTURES IN CHLOROPLASTS ARE CALLED GRANUM .
CHLOROPHYLL
THEY ARE GREEN PHOTOSYNTHETIC PIGMENTS PRESENT IN ALL AUTOTROPHIC TYPE OF NUTRITION EXCEPT BACTERIAS.
FACTORS REQUIRED FOR PHOTOSYNTHESISES
1)EXTERNAL FACTORS
A)SUNLIGHT
B)CARBONDIOXIDE
C)WATER
D)TEMPERATURE
2)INTERNAL FACTORS
A) CHLOROPHYLL
B)ENZYMES
MECHANISIM OF PHOTOSYNTHESIS
A) LIGHT REACTION
IT OCCURS IN THYLAKOID MEMBRANE OF GRANA .
IT IS A PHOTOCHEMICAL CHANGE .
IN THIS PROCESS CHLROPHYLL ABSORBS LIGHT IN THE FORM OF PHOTONS AND IT GET EXCITED AND ENERGY IS REALISED .
B)DARK REACTION
IT OCCURS IN STORMA .
IT IS A SERIES OF BIOCHEMICAL CHANGES .
IN THIS PROCESS 6 MOLECULES OF CARBONDIOXIDE ABSORBED FROM ATMOSPHERE AND CONVERTED INTO CARBOHYDRATE THROUGH A SERIES OF CHEMICAL REACTION CALLED CALVIN-BENSON CYCLE .