Why do some some plants bear flowers but do not bear fruits?

You have to look at the reproduction method, plants that flower have their reproductive organs up on the flower portion and are usually fertilized by a vector such as bees or birds. The example I can think of is a dandellion, the fertilization occurs the flower then disappears then the small diploid pieces become airborne land then flower carrying on their lineage. The flowering trees which all produce fruits have a seed to carry on their lineage. The seed is surrounded by the flowers ovary which is the fleshy portion of fruit that we all enjoy protects and nurishes the seed as well as gives it the ability to move distances rather than reproduce just at the base of the parent where little sunlight is available.

FlowersBirthday FlowersSympathy FlowersSeveral reasons that flowers do not produce fruit. Here are two common reasons.





Some plants are dioecious, i.e., have male (staminate) flowers on one plant and female (ovulate) on another. The male-flowered plants will not produce fruit.





Another example with some fruit trees would be those that require pollen from another tree even though their flowers are perfect (i.e., contain both stamens and pistils). These fruit trees are called self-incompatible. If another tree is not near to serve as the pollen donor, then the tree would have flowers but no fruits. If you go to a good garden center with fruit trees, the descriptions of these kinds of trees will say if another tree is needed for fruit set.
Reply:Flowers have male parts called stamens that produce a sticky powder called pollen. Flowers also have a female part called the pistil. The top of the pistil is called the stigma, and is often sticky. To be pollinated, pollen must be moved from a stamen to the stigma.








For flowers to bear fruits, it first needs to be fertilized. For fertilization to happen, the flower must have a stigma. So when there is no stigma (the female part of the plant), there is no fruit.





Some flowers with both stamens and a pistil are capable of self-fertilization, which does increase the chance of producing seeds but limits genetic variation. The extreme case of self-fertilization occurs in flowers that always self-fertilize, such as many dandelions.hairstyles hair style