Question

what happens if plants ate human

Answer 1

Answer:

This is not possible since even the carnivoros can only scratch human skin and at maximum, itch us.

However, it was to be by some power unknown by us, the world would collapse wil be ripped apart as plants are the producers of the food chain an are responsible for all life and hence it would be catastrophic if the plants turned carnivorous.

Answer 2

There are carnivorous and semi-carnivorous plants.

There are also creatures that hunt for food but can also photosynthesize.