Biology · CELL THE UNIT OF LIFE

In the sectional view of the chloroplast shown below (Figure 8.8), identify the structure and arrangement represented by 'Granum' and 'Stroma lamella':

1. A
   Granum is a single unfolded spherical vesicle; stroma lamella represents circular double-stranded DNA.
2. B
   Granum represents the non-membranous 70S ribosomes; stroma lamella represents the semipermeable outer membrane.
3. C
   Granum consists of thylakoids arranged in stacks like piles of coins, and stroma lamellae are flat membranous tubules connecting the thylakoids of different grana.
4. D
   Granum contains starch grains stored in elaioplasts; stroma lamellae represent contractile proteins causing organelle fission.