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Multiple Choice
Which of the following is the definition of a pathogen?
A
A group of populations living in close enough proximity to interact regularly
B
A species that kills and eats another species
C
A species that is killed and eaten by another
D
A type of interspecific interaction that benefits both species
E
A disease-causing microorganism
Verified step by step guidance
1
Understand the term 'pathogen': In biology, a pathogen is an organism that causes disease in its host. This can include bacteria, viruses, fungi, or parasites.
Analyze the options provided: Each option describes a different biological concept or interaction.
Option 1: 'A group of populations living in close enough proximity to interact regularly' describes a community, not a pathogen.
Option 2: 'A species that kills and eats another species' describes a predator, not a pathogen.
Option 5: 'A disease-causing microorganism' is the correct definition of a pathogen, as it directly refers to organisms that cause diseases.