Question

Do the plants injured when we pluck the flowers?

Answer 1

The cells at the point of injury may die, but they are sealed quickly, within minutes by the cells below. The whole plant becomes aware, through auxin [ hormone] transportation all round the plant via the water flow from roots to leaves. The particular plant may have inherited a mechanism to save the part immediately below the injury; or this whole stem dies, but the rest of the plant remains alive and functioning.