Question

The diagram below shows a pollen tube as it grows down the style.

1. Name the part labeled M,N 
2. State the functions of the part labeled M .

Answer 1

1.    
   • M-male nuclei
   • N- Tube nucleus
2. One of male nuclei fuse with egg cell to form a diploid zygote; the other male nucleus fuses with polar nuclei; to form a primary endosperm nucleus.