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NEET 2023
Exam
NEET
Year
2023
Subject
Zoology
Chapter
Structural Organisation in Animals

NEET 2023 · Zoology · Structural Organisation in Animals

Which of the following is characteristics feature of cockroach...

Which of the following is characteristics feature of cockroach regarding sexual dimorphism?

Options

  1. APresence of anal cerci
  2. BDark brown body colour and anal cerci
  3. CPresence of anal styles
  4. DPresence of selerites

Correct answer

C. Presence of anal styles

Step-by-step solution

Cockroaches are dioecious and both sexes have well-developed reproductive organs. The male and female cockroaches can be easily distinguished based on the presence or absence of anal styles.

Males bear a pair of short, threadlike anal styles which are absent in females. In both sexes, the 10th segment bears a pair of jointed filamentous structures called anal cerci.

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