The pollen has to be ripe or the sperm cells inside can't function. Sperm cells only live for a short time. The female organ must also be ripe....the stigmatic surface must be receptive to the pollen and the eggs located within the ovary must be ready.

Plants function by hormones and the timing of successful pollen germination and egg fertilization is critical....and it's the plant's own timing, not ours.

The plant is telling you something.....listen. It takes a lot of plant energy to produce flowers and all of their functioning parts. To ensure insect pollination at the critically optimal time, plants will produce sweet nectar as both an enticement and a reward for cooperative insects. Including ants, by the way!

Again, it takes a lot of energy to produce nectar, so the plants will only do so when the timing is exactly right. Once successful fertilization occurs, the plant is able to quickly shut down the show and enticement of flower production in order to concentrate on fruit/seed development.

so will mature sperm wait inside an immature flower for a few days and then pollinate it when the female is ready? Does pollen... not the flower itself.. but the Pollen have a life expectancy of more than a day or two?

so will mature sperm wait inside an immature flower for a few days and then pollinate it when the female is ready?

No, viable pollen is very short lived, hours, not days, with the number of hours determined by both hormonal and environmental conditions. That's one reason why you normally get so many more male blooms and why most plant more than 1 plant (to insure the timing for pollination)..

The female bloom in your picture looks like it will open within 12-18 hours of when the photo was taken. You or a bee and a newly opened male has to be there at that time . :)

Dave

Please read rhizo's explanation again, slowly, so that you can fully understand the time line that nature has set.