Do you know about how many species of flowers there are?
The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs
What is the most appropriate flower to send to people of both genders? Like an all around flower for any occasion? Males seem not to be too thrilled about roses..
fusion of sperm and eggs from different individuals in a population leads to outcrossing
what is the lifespan of roses if they are watered and taken care of
Some flowers produce diaspores without fertilization (parthenocarpy)
How long does pollination take?
I'm not sure but what I know is  Flowers contain sporangia and are the site where gametophytes develop
Cool! Is there a such thing as a male and female flower?
Yes buddy, flowers have long been admired and used by humans to bring beauty to their environment