AIIMS 2019 Zoology Arthropoda MCQ Question
Choose the correct statement for Periplaneta americana
It has 6 muscular hearts
It has 10 thoracic segments
Anal style is present in both male and female
It is nocturnal and present in damp places
Correct Answer
Detailed Explanation
Periplaneta americana, commonly known as the American cockroach, has a body divided into three main segments: the head, thorax, and abdomen, with the thorax consisting of three segments, not ten. Therefore, option B is incorrect. Option A is incorrect because it has a single dorsal vessel that functions as a heart, not six muscular hearts. Option C is also incorrect as only males possess anal styles, while females do not. Option D is accurate; the American cockroach is indeed nocturnal and thrives in damp environments, making it a common pest in urban areas.
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