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Answer to Question #67496 in Ecology for Sri

Question #67496
Coral polyps often contain algae living within their tissues, which contribute to their spectacular colours. The algae generally do not survive outside the polyp and the coral grows more slowly if the algae are not present. This association could be best described as:
(a) competition
(b) commensalism
(c) allelopathy
(d) mutualism.
Expert's answer
It is mutualism. Both organisms benefit from the interaction: corals grow faster, while algae survive in it.

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Assignment Expert
20.04.17, 18:20

Dear visitor,
please use panel for submitting new questions

Sri
19.04.17, 04:26

A farmer decided to grow corn to feed his pigs, which he then sold. He argued that if he collected the pigs’ droppings and used them to fertilise his corn, he could continue the process forever.
Explain the main flaw in the farmer’s reasoning. What eventually happens to all the energy that enters this ecosystem?

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