plz explain structure of chloroplast properly with diagrams acc to class 11.............
plzzz
Answers
What is a Chloroplast?
A chloroplast is an organelle unique to plant cells that contains chlorophyll (which is what makes plants green) and is responsible for enabling photosynthesis to occur so that plants can convert sunlight into chemical energy. So basically, without chloroplasts, plants could not create energy, and without them, humans would have no food and we would perish, so thank you chloroplasts!
Chloroplasts in the cells of the thyme moss plant
Structure of Chloroplasts
Chloroplasts can be found in the cells of the mesophyll in plant leaves. There are usually 30-40 per mesophyll cell. The chloroplast has an inner and outer membrane with an empty intermediate space in between. 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. The space the chlorophyll fills is called the thylakoid space.
Role in Photosynthesis
The role of chloroplasts in photosynthesis is mainly to contain most of the reaction during photosynthesis. The plant will pump water into the leaves, and the leaves will also absorb carbon dioxide. All of the thylakoids, chlorophyll, water, carbon dioxide, etc. are available inside the chloroplast. The entire process of photosynthesis starts and completes inside of the chloroplast. The chloroplast essentially works as the 'powerhouse' for the cell, similar to the mitochondria, except that it creates its own food that then gets used to power the plant.
To use a more realistic human scenario, you can think of the chloroplast as the kitchen in your home or a restaurant. All the materials are brought to the kitchen (chloroplast) to cook with. They are then placed into the oven (thylakoids) to bake, and after awhile, out comes your food. Chloroplasts are similar in a sense to a kitchen; raw materials in, cooked food out.