Question

Number of grana present in a chloroplast is

• A. 10-20
• B. 20-30
• C. 30-40
• D. 40-60

Answer 1

The correct option is D 40-60

• 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.
• It is made up of a thylakoid membrane which surrounds the thylakoid lumen.
• A stack of thylakoid disk is organized to form grana.
• Within a chloroplast of a plant cell, there are about 40- 60 grana and each granum are composed of 10 to 100 thylakoids.
• So, the correct answer is '40-60'.