Question

Which one of the following is incorrect?

• A. Biological control methods adopted in agricultural pest control are based on the ability of the predator to regulate prey population
• B. Predators also help in maintaining species diversity in a community by increasing the intensity of competition among competing prey species
• C. In the rocky intertidal communities of the American Pacific Coast the starfish piaster is an important predator.
• D. In a field experiment, when all the starfish were removed from an enclosed intertidal area, more than 10 species of invertebrates became extinct within a year, because of interspecific competition.

Answer 1

Answer: (B)

Predators also help in maintaining species diversity in a community by increasing the intensity of competition among competing prey species