Question

The population interaction where one species is harmed and the other is unaffected is:

• A. Amensalism
• B. Commensalism
• C. Parasitism
• D. Predation

Hint:

Amensalism = 0 / –, Commensalism = + / 0, Parasitism = + / –, Predation = + / –.

Answer 1

The Correct Option is A

Step 1: In amensalism, one species is inhibited or harmed while the other remains unaffected.
Step 2: A classic example is Penicillium secreting penicillin that inhibits bacterial growth.
Step 3: The fungus remains unaffected while the bacteria is harmed.
\[ \Rightarrow \boxed{\text{Correct answer: (A) Amensalism}} \]