Science, asked by SATHYASP, 1 year ago

explain the uses and structure of chloroplast

Answers

Answered by muskan115
1
it is the pigment that gives the green colour to the plant cell .The main role of chloroplasts is to conduct photosynthesis, where the photosynthetic pigmment chlorophyll captures the energy from sunlight and converts it and stores it in the energy-storage molecules ATP and NADPH while freeing oxygen from water . Structure of Chloroplasts. ... Inside the chloroplast are stacks of thylakoids, called grana, as well as stroma, the dense fluid inside of the chloroplast. These thylakoids contain the chlorophyll that is necessary for the plant to go through photosynthesis.
Answered by harshisinghania
1
Chloroplast 

Chloroplasts are organelles present in plant cells and some eukaryotic organisms. Chloroplasts are the most important plastids found in plant cells. It is the structure in a green plant cell in which photosynthesis occurs. 

Chloroplast is one of the three types of plastids. The chloro
plasts take part in the process of photosynthesis and it is of great biological importance. Animal cells do not have chloroplasts. All green plant take part in the process of photosynthesis which converts energy into sugars and the byproduct of the process is oxygen that all animals breathe. This process happens in chloroplasts.
 
The distri
bution of chloroplasts is homogeneous in the cytoplasm of the cells and in certain cells chloroplasts become concentrated around the nucleus or just beneath the plasma membrane. A typical plant cell might contain about 50 chloroplasts per cell.  
Functions of chloroplast:In plants all the cells participate in plant immune response as they lack specialized immune cells. The chloroplasts with the nucleus and cell membrane and ER are the key organelles of pathogen defense.
The most important function of chloroplast is to make food by the process of photosynthesis. Food is prepared in the form of sugars. During the process of photosynthesis sugar and oxygen are made using light energy, water, and carbon dioxide. 
Light reactions takes place on the membranes of the thylakoids. 
Chloroplasts, like the mitochondria use the potential energy of the H+ ions or the hydrogen ion gradient to generate energy in the form of ATP. 
The dark reactions also known as the Calvin cycle takes place in the stroma of chloroplast. 
Production of NADPH2 molecules and oxygen as a result of photolysis of water. 
BY the utilization of assimilatory powers the 6-carbon atom is broken into two molecules of phosphoglyceric acid. 


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