Researchers discover a plant that does not need sunlight for growth. They isolate a unique compound found in the plant's roots. The compound breaks down into amino acids and functions to break down organic matter into food for the plant.

What type of compound did the researchers discover?

a. carbohydrate
b. nucleic acid
c. antibody
d. biological catalyst

To determine the type of compound that the researchers discovered, let's analyze the information provided.

The compound found in the plant's roots breaks down into amino acids and functions to break down organic matter into food for the plant. This indicates that the compound is involved in enzymatic activity and has a role in breaking down organic substances.

Based on this information, the most appropriate option would be:

d. biological catalyst

A biological catalyst, also known as an enzyme, facilitates chemical reactions in living organisms. In this case, the compound in the plant's roots aids in the breakdown of organic matter, serving as a source of nutrients for the plant's growth.