However, I do know that not all plants we eat die as a result of being eaten, for example, eating apples from an apple tree does not kill anything - I suppose I can see that this is like eating eggs from a chicken.
Another example could be eating the leaves of rocket lettuce (but choosing not to uproot it), or the stalks of celery or rhubarb is another example, in both cases the plant can return to complete health over time.
Then there are some plants, such as grasses that require the ends of their blades to be eaten in order to be healthy.