Inflorescence of Tragopogon . The individual dry fruits have a Parachute-like plume of hairs. In some cases hydrostatic pressur e develops in the Ovary that acutely leads to the forceful ejection of seeds. Certain cucumbers spit out their seeds. The most famous of these is the Squirting Cucumber.
Some fruits create mechanical force as they mature and forcefully eject their seeds.
Impatiens Fruits open violently and scatter their seeds. This is due to the fact that its fruit ejects its seeds with the slightest touch when the ovaries are mature. It should be clear that there are many positive adaptations for sexual reproduction associated with the Ovule and Flower. It also helps to explain the success of Angiosperms compared to other taxa.