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Tamil Nadu Board of Secondary EducationHSC Science Class 11

Differentiate between male and female cockroach? - Zoology

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Question

Differentiate between male and female cockroach?

Distinguish Between
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Solution

Sr. No. Male Cockroach Female Cockroach
1. The body of male cockroach is smaller than the female cockroach's body. The body of female cockroach is relatively larger than the male body.
2. The abdomen of male cockroach is slender as well as the last segment of the abdomen is pointed. The abdomen of the female cockroach is boat-shaped and the last segment is blunt.
3. The wings of male cockroaches are larger. The wings of female cockroaches are smaller.
4. The antennae of male cockroach are smaller than that of the female's cockroach antennae. The antennae of female cockroaches are relatively larger than that of the males.
5. In the 9th sternum of the abdomen a pair of small, un-jointed anal styles along with the 10th tergum of abdomen a pair of long, palp-like jointed anal cerci are present. There is only a pair of anal cerci is present in of female cockroach.
6. The sternum of the mesothorax is not bifurcated in male cockroaches. The sternum of the mesothorax is bifid in the female cockroach's body.
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Cockroach - Periplaneta Americana
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Chapter 4: Organ and Organ Systems in Animals - Evaluation [Page 71]

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Samacheer Kalvi Zoology [English] Class 11 TN Board
Chapter 4 Organ and Organ Systems in Animals
Evaluation | Q 30 | Page 71
Samacheer Kalvi Biology (Zoology) [English] Class 11 TN Board
Chapter 4 Organ and Organ Systems in Animals
Evaluation | Q 30. | Page 71
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