Why is it that Parthenocarpic Fruits are seedless?
They are seedless because the seeds were "aborted" when still small (check the wikipedia site Parthenocarpy.)
Parthenocarpic plants can no longer reproduce
Parthenocarpy is a phenomenon in which fruits develop without fertilization. This means that they can develop without the need for pollination or seed formation. As a result, parthenocarpic fruits are often seedless.
The absence of seeds in parthenocarpic fruits is due to the absence of fertilization. Normally, a fruit develops after a flower is pollinated, and the ovary of the flower is fertilized. This triggers the development of seeds within the fruit. However, in parthenocarpy, the fruit develops without any fertilization process occurring.
There are a few ways parthenocarpy can occur. One mechanism involves the production of hormones called auxins or gibberellins, which stimulate fruit growth without fertilization. Another mechanism is through the stimulation of fruit development by artificial means, such as pollination by hand or the application of certain growth regulators.
Seedlessness in parthenocarpic fruits has its advantages. They tend to be more desirable for consumption since they are easier to eat due to the absence of seeds. Also, they have a longer shelf life since they do not undergo the normal process of seed maturation, which can lead to faster fruit deterioration.
So, in summary, the seedless nature of parthenocarpic fruits is a result of their ability to develop without fertilization and the absence of the usual formation of seeds during fruit growth.