Interior of chloroplast is divided into the heterogeneous structure, embedded in the stroma known as:
Correct answer: A. Grana
- A. Grana
- B. Thylakoids
- C. Stroma
- D. Cisternae
Explanation
The correct answer is Grana. Grana are integral structures within chloroplasts, consisting of stacks of thylakoids where the light-dependent reactions occur. These are embedded in the stroma, the fluid matrix that supports the chloroplast's functions. Thylakoids are the individual units that compose grana but are not the matrix. Stroma is indeed the matrix but not the heterogeneous structure described in the question. Cisternae belong to the Golgi apparatus, thus unrelated to chloroplast structure and function.
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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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