This video segment adapted from NOVA explains how flowers play a central role in the reproductive cycle of plants. Their striking array of colors, patterns, fragrances, and nectar all require lots of ...

Many animals, including humans, are one sex, either male or female. Most flowering plants have both male and female reproductive structures, not only on the same plant, but often in the same flower.

Scientist have shown how the gene that codes for 'androecy' -- a state in which a plant produces male flowers only -- mediates the production of a key plant enzyme that determines whether an ...

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 ...