Draw the diagram of chloroplast and explain structure and functions
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heya !!!
》》WHAT IS CHOLOROPLAST ?
□It is found only in algal and plant cells , is a cell organelles that produces energy through photosynthesis.
□The word chloroplasts comes from the Greek word - Khloros meaning GREEN and plastes meaning FORMED .
□ It has higher concentration of chlorophyll , the molecule that captures light energy and it gives green colour to plants and algae .
》》FUNCTIONS OF CHLOROPLAST
■The process of converting light energy to energy stored in the form of sugar and other organic molecules that the plants or algae uses as food .
■Photosynthesis has two stages :
■In first stage , the light DEPENDENT REACTION occurs . This reaction captures sunlight through chlorophyll and carotenoids to form ATP ( energy currency of the cell ) and NADPH which carries electrons.
■The second stage consists of light INDEPENDENT REACTIONS , also known as CALVIN CYCLE .
■ In Calvin cycle electrons carried by NADPH convert inorganic CO2 and to an organic molecule in the form of carbohydrate , a process known as CO2 FIXATION . Carbohydrates and other organic molecules are stored and used at later time of energy.
■Chloroplasts are essential for growth and survival of plants and photosynthetic algae . Like solar panels , chloroplasts take light energy and convert it into a usable form that power activities.
》》STRUCTURE OF CHLOROPLASTS
◇Chloroplasts , like mitochondria are Oval shaped and have two membranes : an outer membrane , which forms the external surface of the chloroplast and an inner membrane that lies just beneath .
◇Between the inner and outer membrane is a thin internembrane space about 10 to 20 nanometers wide .
◇The space within inner membrane is called STROMA . While the inner membrane of mitochondria have many folds called CRISTAE to absorb surface area , the inner membranes of chloroplasts are smooth .
◇Instead , chloroplasts have many small disc shaped sacs called THYLAKOIDS within their stroma . In vascular plants and green algae , the thylakoids are stacked on top of one another and a stack of thylakoids is called GRANUM .
◇The thylakoids contains chloroplasts , carotenoids and these pigment absorb light during photosynthesis.
◇In stroma , enzymes makes complex organic molecules that are used to store energy such as CARBOHYDRATES .
◇The stroma also contains it's own DNA AND RIBOSOMES that are similar those found in photosynethic bacteria. For those reasons chloroplasts are evolved in eukaryotic cells from free living bacteria , just like mitochondria did .
hope it helps u dear ^_^
》》WHAT IS CHOLOROPLAST ?
□It is found only in algal and plant cells , is a cell organelles that produces energy through photosynthesis.
□The word chloroplasts comes from the Greek word - Khloros meaning GREEN and plastes meaning FORMED .
□ It has higher concentration of chlorophyll , the molecule that captures light energy and it gives green colour to plants and algae .
》》FUNCTIONS OF CHLOROPLAST
■The process of converting light energy to energy stored in the form of sugar and other organic molecules that the plants or algae uses as food .
■Photosynthesis has two stages :
■In first stage , the light DEPENDENT REACTION occurs . This reaction captures sunlight through chlorophyll and carotenoids to form ATP ( energy currency of the cell ) and NADPH which carries electrons.
■The second stage consists of light INDEPENDENT REACTIONS , also known as CALVIN CYCLE .
■ In Calvin cycle electrons carried by NADPH convert inorganic CO2 and to an organic molecule in the form of carbohydrate , a process known as CO2 FIXATION . Carbohydrates and other organic molecules are stored and used at later time of energy.
■Chloroplasts are essential for growth and survival of plants and photosynthetic algae . Like solar panels , chloroplasts take light energy and convert it into a usable form that power activities.
》》STRUCTURE OF CHLOROPLASTS
◇Chloroplasts , like mitochondria are Oval shaped and have two membranes : an outer membrane , which forms the external surface of the chloroplast and an inner membrane that lies just beneath .
◇Between the inner and outer membrane is a thin internembrane space about 10 to 20 nanometers wide .
◇The space within inner membrane is called STROMA . While the inner membrane of mitochondria have many folds called CRISTAE to absorb surface area , the inner membranes of chloroplasts are smooth .
◇Instead , chloroplasts have many small disc shaped sacs called THYLAKOIDS within their stroma . In vascular plants and green algae , the thylakoids are stacked on top of one another and a stack of thylakoids is called GRANUM .
◇The thylakoids contains chloroplasts , carotenoids and these pigment absorb light during photosynthesis.
◇In stroma , enzymes makes complex organic molecules that are used to store energy such as CARBOHYDRATES .
◇The stroma also contains it's own DNA AND RIBOSOMES that are similar those found in photosynethic bacteria. For those reasons chloroplasts are evolved in eukaryotic cells from free living bacteria , just like mitochondria did .
hope it helps u dear ^_^
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Anonymous:
wow..!! well explained
hehee thanks ....!
Answered by
23
Hello friend..
Chloroplast :
chloroplast was discovered by Anton Von leeuwenhoek term chloroplast was given by schimper.these are most common type of plastids found in the photosynthetic Mesophyll cells of leaves and green stem also found in some protists example euglena these are absent from bacteria, cyanobacteria, fungi and animals.
=> chloroplast are coloured plastids due to the presence of pigments these are found in aerial parts like leaves, flowers, fruits etc chloroplast help in photosynthesis, pollination or dispersal of seeds or fruits.chloroplast are sites of photosynthesis in which seo2 is consumed and O2 and organic food are produced.
❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Chloroplast :
chloroplast was discovered by Anton Von leeuwenhoek term chloroplast was given by schimper.these are most common type of plastids found in the photosynthetic Mesophyll cells of leaves and green stem also found in some protists example euglena these are absent from bacteria, cyanobacteria, fungi and animals.
=> chloroplast are coloured plastids due to the presence of pigments these are found in aerial parts like leaves, flowers, fruits etc chloroplast help in photosynthesis, pollination or dispersal of seeds or fruits.chloroplast are sites of photosynthesis in which seo2 is consumed and O2 and organic food are produced.
❤❤❤❤❤❤❤❤❤❤❤❤❤❤
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