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Question : Amensalism is an association between two species where

Answer»

one species is harmed and other is BENEFITTED 
one species is harmed and other is unaffected 
one species is benefitted and other is unaffected
both the species are harmed. 

Solution :•Amensalism. It is also CALLED as anti-biosis. E.g. Penicillium notatum (Blue mold) KILLS the bacteria by secreting penicillin an antibiotic.
• The adversely affected species is called amensal while the affecting species is called as inhibitor.
• The bacteria are harmed while the fungi (blue mold) is unaffected.
• The blue mold can survive in presence or ABSENCE of bacteria.
• The blue mold can survive in presence or absence of bacteria.
 
•`+ rarr` Beneficial interaction
• `- rarr` Detrimental interaction
• `0 rarr` NEUTRAL interaction


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