Which of the following is a flattened disc-like sac in a chloroplast?

Loculus

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Thylakoid

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Stroma

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Margin

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Solution

The correct option is B Thylakoid
Thylakoid is a flattened disc-like sac found inside a chloroplast which is the site of photosynthesis, in plants and algae. Chlorophyll molecule is present inside the thylakoid. In the thylakoid membrane, there are two photosystems (I and II). Thylakoids consist of a thylakoid membrane surrounding a thylakoid lumen. Hence option B is correct.

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