The Quran in 51:49 states that everything was created in pairs. How does this apply to asexual plants, animals, bacteria, and viruses, which only need themselves to reproduce? What is the counterpart in such scenarios?
"In all things We have created pairs so that you may take admonition." Qur'an 51:49
Quran is very clear that Allah Created pairs in every creature but the concept of pairing which we have is not comprehensive for all creature as our knowledge is limited. Allah Knows the pairing in every creature even what we think single like asexual plants, animals, bacteria and viruses. We should never limit the facts of all creatures to our own limited thinking. Allah states in Quran (Allah creates what you do not know) (Sura An-Najm, verse 8).
The Creator Who Knows everything about all His creatures Knows the pairing of what Has Created. Our thinking is limited and superficial while His Knowledge is comprehensive and unlimited.
Wassalam.