A living association between two living organisms of different species that is beneficial to both partners is called:
Correct answer: C. Mutualism
- A. Commensalism
- B. Parasitism
- C. Mutualism
- D. Predation
Explanation
A symbiotic relationship, or symbiosis, is a close and long-term biological interaction between two different species. The relationship can be categorized into three main types: mutualism, where both species benefit; commensalism, where one benefits and the other is unharmed; and parasitism, where one benefits at the expense of the other.
This question appeared on the UHS MDCAT 2013 paper, which you can sit online with every answer explained.
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About Ecosystems
An ecosystem consists of organisms interacting with one another and with abiotic factors such as light, water, soil and temperature. The topic covers populations and communities, food chains and webs, trophic levels, ecological pyramids, energy flow, nutrient cycles and ecological succession.
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