Explanation

Fertilization is when a sperm cell joins with an egg cell to start creating a new organism. This fusion combines genetic material from both parents. The fertilized egg then begins dividing and developing into an embryo.

Fertilization is essential for sexual reproduction in most animals and many plants. It triggers the development process that grows a single cell into a complete organism. Without fertilization, the egg cannot develop into a new individual.

Pollination is the transfer of pollen but not fertilization itself. Germination is when seeds sprout after fertilization already happened. Budding is asexual reproduction that does not involve fertilization. Only fertilization directly creates developing organisms through cell fusion.