Previously, human being did not know that plants too have male and female gender distinctions. Botanists state that every plant has a male and female gender. Even plants that are unisexual have distinct elements of both male and female.
The Glorious Quran states:
“And (Allah) has sent down water from the sky. With it We produced diverse pairs of plants each separate from the others” – Q20:53.
Again, fruits which are the end product of reproduction of the superior plants also contain male and female organs. The Quran states:
“And fruit of every kind He made in pairs, two and two” – Q13:13
Almighty Allah, the Supreme Creator also makes reference that everything are created in pairs including the unknowns. Thus:
“And of everything We have created in pairs” – Q51:49.
This simply refers to living things and non-living things (e.g phenomenon like electricity in which the atoms consist of negatively- and positively-charged electrons and protons).
The Glorious Quran, in 1400 years ago, thus concluded that:
“Glory be to Allah, who created in pairs all things that the earth produces, as well as their own (human) kind and other things of which they (human) have no knowledge” – Q 36:36.