Question

Why do fruit and vegetable act as sink?​

Answer 1

Answer:

A fruit is a sink because it produces very little of all the sugars it requires and depends on a source for all the inorganic nutrients it contains.

Vegetables, e.g., spinach leaves are a different matter. Only young leaves are sinks, when they import sugars as well as nutrients. Soon afterwards, however, they become sources of sugars. For all the inorganic nutrients they require, they remain a sink