Question

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Part A The following statements about community structure and interactions are correct, with the exception of which one? An organism that influences a community by changing its physical environment is referred to as an ecosystem engineer The dynamic stability hypothesis suggests that long food chains are less stable than low food chains. Communities show variation in the top-down and bottom-down community control. High-diversity communities are often more resilient to invasive species than low-diversity communities. The trophic cascade model suggests that the lower trophic levels influence/control the higher trophic levels. Submit Request Answer Provide Feedback

Answer 1

Ans. Option C is the correct answer.

EXPLANATIONS:- The given statement C is the incorrect statement. Communities show variation in the top- down and bottom up community control rather the bottom down community control. There is no bottom down community control.  

In top down community control influences the interaction at the top level consumer and their prey influences on lower trophic forms.

The bottom up community control focuses on how the nutrients influence the higher trophic levels.