Question

Grana are

• A. Protein storing plastids
• B. Coloured plastids
• C. Stacks of thylakoids
• D. Individual thylakoids present in stroma

Answer 1

Answer: (C)

Stacks of thylakoids

• A stack of thylakoid discs is organized to form grana.
  
• A thylakoid refers to the membrane-bound internal compartment within the chloroplasts of a plant cell and cyanobacteria.
  
• It is a site for light-dependent reactions of photosynthesis.
  
• There are about 10 to 100 thylakoid discs within a granum and about 40- 60 grana in a plant cell.
  
• So, the correct answer is 'Stacks of thylakoids'.