What is a source and sink in a plant?

Answer 1

The basic idea of a source is as follows:

A source produces something (a spring is a source).

A sink consumes something (a hole in the ground that water pours into is a sink hole).

But in Biology, the terms have more specific meaning.

That "something" is referring to carbohydrates.

"The movement of carbohydates occurs from where carbohydates are made or have been stored, called a source, to where they will be stored or used, called a sink."

Answer 2

In plants, a source is a tissue or organ that produces or stores nutrients such as sugars, while a sink is a tissue or organ that consumes or utilizes these nutrients. Sources typically include leaves where photosynthesis occurs, while sinks can be developing fruits, roots, or flowers. The movement of nutrients between sources and sinks is important for plant growth and development.