Prior to this, the pollen tubes first need to gain their ability to respond to attractant molecules. Fertilization finally occurs by pollen tubes releasing sperm cells to the egg cells.
Some species of black widow spiders die after mating or laying eggs. Shrews typically die after giving birth due to their rapid metabolism and the intense energy needed for reproduction. Worker ...
Fertilization is the fusion of two haploid gametes, during the process of sexual reproduction, to initiate the development of a new diploid organism with mixed genetical heritage. In flowering ...