What is grana and thylakoids?? (in biology)
And its function with proper details!...
Answers
Thylakoids a round structure present in the chloroplast in plant cell.They contain chlorophyll in their walls.A pile or stack of thylakoids
is collectively known as grana.
They carry out photosynthesis.
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Thylakoids-
Thylakoid is the site of photochemical or light-dependent reactions of photosynthesis. Chlorophyll present in the thylakoid membrane absorbs energy from the sunlight and is involved in the formation of ATP and NADPH in the light reaction of photosynthesis through electron transport chains. Thus, light energy is converted into chemical energy.
It is also involved in the water oxidation or photolysis of water resulting in the release of oxygen during photosynthesis.
Thylakoids are membranous sacs present in the chloroplast. Chlorophyll is present in the thylakoid membrane. Multiple thylakoids are attached together to form a stack of discs known as grana.
Grana
Grana are stacks of membrane-bounded, flattened discoid sacs called thylakoids containing the molecules of chlorophyll. They are the main functional units of chloroplasts.