The following equation represents a hypothetical relationship between fitness (w) and shoot: root ratio (r) in individuals of a plant species: w = 10r-10r2. At what value of shoot: root ratio (r), do these plants achieve maximum fitness? (Use decimal notation, not fractions or percentage)

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#Question id: 10831

#Section 1: Ecology

Which of the following helps a prey species advertise to predators that it is unpalatable?

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#Question id: 10832

#Section 1: Ecology

Which of the following is an example of a plant chemical defence?

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#Question id: 10833

#Section 1: Ecology

All the organisms that occur in the redwood community

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#Question id: 10834

#Section 1: Ecology

Which of the following is not an example of symbiosis?

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#Question id: 10835

#Section 1: Ecology

Which of the following is not an example of coevolution?

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#Question id: 10836

#Section 1: Ecology

Which of the following is an example of a plant morphological defence?