Question

Penicillium secretes an antibiotic called penicillin into the growth media, which kills and inhibits the growth of bacteria. This type of relationship between two organisms is called

• A. commensalism
• B. parasitism
• C. ammensalism
• D. competition

Answer 1

The correct option is C ammensalism

Ammensalism is a type of relationship between organisms belonging to different species where one inhibits or destroys the other and remains unaffected. Here, the antibiotic secreted kills or inhibits bacteria, while the mold remains unaffected.

Commensalism is a type of relationship where one organism is benefitted from the other, while the other is neither benefitted nor harmed.

Parasitism is a type of relationship where one organism (parasite) benefits from the other (host) by harming it.

Competition is a type of interaction between species where they compete with each other for the same resources.