generative nucleus वाक्य

उदाहरण वाक्य

1. The nucleus of the tube cell has meanwhile passed into the tube, as does also the generative nucleus, which divides ( if it hasn't already ) to form two sperm cells.
2. During pollen tube growth towards the ovary, the generative nucleus divides to produce two separate sperm nuclei ( haploid number of chromosomes )  a growing pollen tube therefore contains three separate nuclei, two sperm and one tube.