Plant reproductive complexity increased in two, widely separated pulses likely driven by important evolutionary innovations, including the origin of seeds and flowers, according to a new study. These ...

A gradient (red) in the concentration of auxin, a plant hormone, determines that only one of the eight undifferentiated nuclei in a plant's embryo sac will become an egg. (In this image, a large ...

In flowering plants, male and female reproductive structures can be found in the same individual plant. The organ of sexual reproduction is the flower. Male gametes are found in pollen grains and ...

Researchers have discovered an ancient plant species whose reproductive biology captures the evolution from one to two spore sizes -- an essential transition to the success of the seed and flowering ...

The colonisation of land by plants was one of the most important evolutionary steps on earth; it subsequently affected all other terrestrial evolutionary processes. Leaving the aquatic environment ...

Scientists have found that developmental change from the vegetative-to-reproductive transition happens over the course of a few days. During the transition, plants slow down the leaf growth and ...