The dense fluid filled region in the chloroplast is____________?

Correct answer: B. Stroma

  • A. Grana
  • B. Stroma
  • C. Thylakoid
  • D. None of these

Explanation

The stroma is the dense, enzyme-containing fluid region surrounding the thylakoids inside a chloroplast, and it is the site of the Calvin cycle. Students may choose grana because they are another major chloroplast structure, but grana are stacks of membranes rather than a fluid-filled region.

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