The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are:
Correct answer: D. Grana
- A. Cisternae
- B. Stroma
- C. Cristae
- D. Grana
Explanation
Grana are stacks of thylakoids within the chloroplasts, where light-dependent reactions of photosynthesis occur. These are the correct structures formed by stacking of flattened membranous sacs.
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Animal, plant, prokaryotic and eukaryotic cells are compared through their membranes, cell walls, nuclei and cytoplasmic organelles. The work includes the structures and functions of mitochondria, chloroplasts, ribosomes, endoplasmic reticulum, Golgi apparatus and lysosomes, as well as chromosome organization and the distinction between chromatin and chromosomes.
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