Question

What facts would you use to prove that vegetables come from plants?

Answer 1

all naturally grown foods come from plants. what would a vegetable come from if not the byproduct of a plant? I am sure we are no where near being able to grow a vegetable in a lab without the germination of a seed and flowering of a plant.

Answer 2

Plants sprout from seeds.
Vegetables grow off the stems of a plant.
Vegetables are plants