Why won't you find plant life in the aphotic zone?

In aphotic zones there is less than 1% sunlight since it is very deep in the ocean, most plants wouldn't be able to grow since they wouldn't have the resources.

No sunlight,  up to a kilometre away from the surface, the temperature and pressure becomes too unsuitable organisms to survive. This is a minor factor compared to the lack of light. Hence, we won't find plant in aphotic zone.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.