Stack of thylakoids in chloroplasts is called:
Correct answer: A. Grana
- A. Grana
- B. Stroma
- C. Nucleus
- D. None of these
Explanation
The correct answer is 'Grana'. Grana are stacks of thylakoids found in chloroplasts and are crucial for capturing light energy during photosynthesis. The other options are incorrect: 'Stroma' refers to the fluid matrix where the Calvin cycle takes place, 'Nucleus' is unrelated to thylakoids as it is the genetic command center of the cell, and 'None of these' is incorrect because 'Grana' correctly describes the stacks of thylakoids.
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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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