viljastumisvõimeline

Viljastumisvõimeline, often translated as "fertile" or "capable of fertilization," refers to the biological state of an organism that possesses the ability to reproduce. This term is most commonly applied to the female reproductive cells, or ova, in animals and the ovules in plants. An ovum is considered viljastumisvõimeline when it is mature and available for fertilization by a sperm cell or pollen grain, respectively. The period during which an ovum is viljastumisvõimeline is typically limited and corresponds to the fertile window in an organism's reproductive cycle.

In humans and many other mammals, ovulation is the release of a mature ovum from the ovary. This ovum remains viable and capable of fertilization for a relatively short period, usually between 12 to 24 hours. If fertilization does not occur within this timeframe, the ovum degenerates and is expelled from the body. Similarly, in plants, ovules become viljastumisvõimeline at specific times, often coinciding with the opening of flowers and the presence of viable pollen. The concept of viljastumisvõimeline is fundamental to understanding sexual reproduction and its timing.