Question:
Which of the following is not correct related to Ascaris lumbricoides?
Which of the following is not correct related to Ascaris lumbricoides?
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In Ascaris: male = curved posterior end, female = straight posterior end.
Updated On: Jun 19, 2026
- Sexual dimorphism is distinct
- Female Ascaris has a curved posterior end
- Male Ascaris has a pair of penile setae
- In both males and females, the body is elongated and cylindrical
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The Correct Option is B
Solution and Explanation
Step 1: Understand Ascaris morphology.
Ascaris lumbricoides is a parasitic roundworm showing sexual dimorphism.
Step 2: Male characteristics.
Male Ascaris has a curved posterior end and copulatory structures.
Step 3: Female characteristics.
Female Ascaris has a straight posterior end and is larger in size.
Step 4: Evaluate options.
Statement (2) is incorrect because curvature is found in male, not female.
Step 5: Other statements.
Sexual dimorphism is distinct and body is cylindrical in both sexes, so those are correct.
Step 6: Conclusion.
Thus, option (2) is not correct.
Ascaris lumbricoides is a parasitic roundworm showing sexual dimorphism.
Step 2: Male characteristics.
Male Ascaris has a curved posterior end and copulatory structures.
Step 3: Female characteristics.
Female Ascaris has a straight posterior end and is larger in size.
Step 4: Evaluate options.
Statement (2) is incorrect because curvature is found in male, not female.
Step 5: Other statements.
Sexual dimorphism is distinct and body is cylindrical in both sexes, so those are correct.
Step 6: Conclusion.
Thus, option (2) is not correct.
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