Organisms that grow on plant materials and absorb food from them are called saprotrophs.

Here's why:

* Saprotrophs are organisms that obtain their nutrients from dead organic matter. They break down complex organic molecules into simpler ones, which they then absorb.

* Plants are made of organic matter.

* This process is crucial for recycling nutrients back into the ecosystem.

Examples of saprotrophs:

* Fungi: Many types of fungi decompose dead wood, leaves, and other plant matter.

* Bacteria: Some bacteria specialize in breaking down specific plant components like cellulose.

* Worms: Earthworms and other worms consume and break down decaying plant material.

Let me know if you have any other questions!