Interesting points about Nutrition in plants?
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plants have autotrophic nutrition, means they prepare their own food. plants prepare their own food by the process of photosynthesis.
the process of using energy in sunlight to convert water and CO2 into carbohydrates and oxygen is called photosynthesis. light energy
6CO2 + 12H2O → C6H12O6 + 6O2 6H2O.
chlorophyll
basic raw materials needed for photosynthesis are:
1. sunlight acts as a source of energy.
2. CO2 is obtained from the atmosphere.
3. water is absorbed from the soil by the roots of plants.
chloroplasts:
chloroplasts are bound by double membrane, they contain closely packed âattened sacks called thylakoids arranged in piles called granum. these granum lie in a colourless ground surface called stroma. thylakoids contain pigment called chlorophyll which traps solar energy
process of photosynthesis:
photosynthesis involves a series of photochemical reactions that consists of two faces light and dark reactions.
light reaction: takes place in the thylakoids of the chloroplasts.
light reaction takes place in the presence of sunlight, using light energy and water molecules splits up to release oxygen. the chlorophyll in the thylakoids of chloroplast traps light energy and exites an electron.this excited electron converts light energy into chemical energy and this chemical energy is stored as ATP and NADPH
Thus light reaction produces the energy source ATP and NADPH but not the food.
DARK REACTION: takes place in the stroma of the chloroplasts.
DARK REACTION takes place in the stroma of the chloroplasts by reducing CO2 to carbohydrates utilising energy from ATP. it can takes place with or without sunlight, hence the name dark reaction. by the end of the dark reaction plants prepare glucose, this glucose is used immediately by the cells or stored in the form of starch
the process of using energy in sunlight to convert water and CO2 into carbohydrates and oxygen is called photosynthesis. light energy
6CO2 + 12H2O → C6H12O6 + 6O2 6H2O.
chlorophyll
basic raw materials needed for photosynthesis are:
1. sunlight acts as a source of energy.
2. CO2 is obtained from the atmosphere.
3. water is absorbed from the soil by the roots of plants.
chloroplasts:
chloroplasts are bound by double membrane, they contain closely packed âattened sacks called thylakoids arranged in piles called granum. these granum lie in a colourless ground surface called stroma. thylakoids contain pigment called chlorophyll which traps solar energy
process of photosynthesis:
photosynthesis involves a series of photochemical reactions that consists of two faces light and dark reactions.
light reaction: takes place in the thylakoids of the chloroplasts.
light reaction takes place in the presence of sunlight, using light energy and water molecules splits up to release oxygen. the chlorophyll in the thylakoids of chloroplast traps light energy and exites an electron.this excited electron converts light energy into chemical energy and this chemical energy is stored as ATP and NADPH
Thus light reaction produces the energy source ATP and NADPH but not the food.
DARK REACTION: takes place in the stroma of the chloroplasts.
DARK REACTION takes place in the stroma of the chloroplasts by reducing CO2 to carbohydrates utilising energy from ATP. it can takes place with or without sunlight, hence the name dark reaction. by the end of the dark reaction plants prepare glucose, this glucose is used immediately by the cells or stored in the form of starch
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