Even early plants likely had sophisticated pores to regulate water and swap gases with their environment. (science.sciencemag.org)
A probing portrait of early plant - breeding technologies unearths surprising roots of genetic engineering efforts (sciencemag.org)
So early plant breeders took one yellowish orange variety and stuck with it, breeding better - tasting, faster - growing, nicer - looking, and higher - yielding crops generation after generation. (bonappetit.com)