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Amensalism, also known as antibiosis, refers to an interaction between two species where one is harmed or inhibited while the other remains unaffected. For example, Penicillium releases substances that negatively impact other microbes like Staphylococcus, without affecting Penicillium itself.

1. True
2. False
3. Cannot be determined
4. None of the above

Correct answer: True

Solution

Amensalism is correctly described as an interaction where one species is harmed while the other remains unaffected. The example of Penicillium producing antibiotics like penicillin that inhibit Staphylococcus aligns with this definition.

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