Which of the following relationship involves only one organism?

A. Saprophytism
B. Commensalism
C. Parasitism
D. Symbiosis

Correct Answer:

Option A – Saprophytism

Explanation

A saprophyte or saprotroph is an organism that gets its energy from dead and decaying organic matter. This may be decaying pieces of plants or animals. This means that saprophytes are heterotrophs. They are consumers in the food chain.