HOTS
Two insect species were used in a laboratory experiment. For the treatment, both species were grown by themselves on a suitable food source. For the second treatment, the two species were grown together on the same type and amount of food as in the first treatment. The given figure show the result at the end of the experiment. Based on these results the two species should be classified as

Competitors

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Mutualists

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Predators or pathogens

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Commensalists

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Solution

The correct option is B Mutualists
The given data shows that the insect species A and B are mutualists. Mutualism is an interaction between two organisms of different species where both the partners are benefited fom each other. Species A when grown alone showed less number of individuals, however, Its population increased when grown along with species B. Similar observation were made for species B. Hence, It can be concluded that they exhibit mutualism.

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