NEET Biology NEET PYQ-Cell The Unit Of Life

  • question_answer
    The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are [NEET [C] 2015]

    A) cristae

    B) grana

    C) stroma lamellae

    D) None of thise

    Correct Answer: D

    Solution :

    [D] The structures that are formed by stacking of organised flattened membranous sacs (thylakoids) in the chloroplasts are grana. Chloroplasts are organelles found in plant cells that conduct photosynthesis. It is made up of three layers (membranes) (i) Smooth outer membrane (ii) Smooth inner (middle) membrane (iii) Innermost membrane It has thylakoid system, which is surrounded by the stroma and grana. Stroma is a alkaline, aqueous fluid which is protein rich. Grana is formed by stacking of organised flattened membranous sacs called thylakoid.


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