Physics NEET Full Syllabus Mock Test 180 Question New Syllabus Mock Test - 6 PCB MCQ (Single Correct)

Find the mismatched pair.

A
Starfish Pisaster - Increases interspecific competition
B
Prickly pear Cactus and cactus feeding moth Biological control methods
C
Calotropis and cardiac glycosides - Plant defense mechanism
D
Abingdon tortoise and Goat - Interference Competition

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The correct answer is:
A

In the rocky intertidal communities of the American Pacific Coast the starfish Pisaster is an important predator. 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. Hence, the starfish Pisaster decreases interspecific competition.

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