Which one is true?
Correct answer: B. Symbiosis is when the interaction is useful to both the populations
- A. Commensalism is when none of the interacting populations affect each other
- B. Symbiosis is when the interaction is useful to both the populations
- C. Symbiosis is when neither populations affect each other
- D. Commensalism is when the interaction is useful to both the populations.
Explanation
In mutualism or symbiosis, both the organisms in association are mutually benefitted and further this association is obligatory, i.e., necessary for the existence of both organisms. Mycorrhiza is an example of symbiosis. It is the association between roots of higher plants and fungal hyphae. The fungal hyphae supply water and nutrients to the plant and in turn, get food from the plant. So both the organisms are mutually benefitted.
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Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
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