Question

Which of the following is true of ecological succession? Pioneer organisms move into new communities first. Primary productivity decreases as succession proceeds. Secondary succession takes place within new communities with no previous soil. All of the above are true.Which of the following is true of ecological succession? Pioneer organisms move into new communities first. Primary productivity decreases as succession proceeds. Secondary succession takes place within new communities with no previous soil. All of the above are true.Which of the following is true of ecological succession? Pioneer organisms move into new communities first. Primary productivity decreases as succession proceeds. Secondary succession takes place within new communities with no previous soil. All of the above are true.

Answer 1

The answer is A.

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Answer 2

Answer: Pioneer organisms move into new communities first.

An ecological succession is the the change in the biotic and abiotic components of the environment in an ecosystem until it attains stability. Primary succession occurs in areas where no life form ever existed. In such areas soil is incapable of sustaining life as a result of factors such as volcanic eruptions, rocks left by glaciers erosion etc. Pioneer organisms move into new communities first as there are chances of getting resources like food, shelter etc., competition among species is low or negligible.