Draw a neatly labeled diagram of chloroplast found in leaf, and its role in photosynthesis? (AS5)


Chloroplast is a double membrane organelle that is indispensable for the process of photosynthesis. Largely, chloroplast consists (Fig 8) of:


a) Outer membrane: A membrane that is permeable to small molecules.


b) Inner membrane: A membrane that contains transporter proteins for sucrose and phosphate precursors.


c) Intermembrane space: A space between outer and inner membrane of chloroplast.


d) Stroma: Stroma is the cytoplasm of chloroplast which serves a site for light independent reaction viz. it contains the enzymes required for Calvin cycle.


e) Thylakoids: Thylakoids are membrane bound organelles in chloroplast. The thylakoid membrane serves as a site for light dependent reaction viz. it contains enzymes that generate ATP and NADPH.



Fig 8 shows the function of each part of chloroplast


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