The female Ascaris-a)Has conical posterior endb)Has separate genital o...
Ascaris is an animal genus comprised of intestinal roundworms. Ascaris lumbricoides lives in humans, and ascaris suum in pigs. Although the male and female worms look similar, there are several characteristics that distinguish the two sexes, both externally and internally.
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The female Ascaris-a)Has conical posterior endb)Has separate genital o...
The correct answer to the given question is option 'D', which states that the female Ascaris shows all the above characters. Now let's discuss each of these characters in detail:
1. Conical posterior end:
The female Ascaris has a conical posterior end, which means that the posterior part of its body tapers down to a point. This conical shape helps the female Ascaris to move and navigate through the host's intestines.
2. Separate genital opening placed ventrally in the upper part:
The female Ascaris has a separate genital opening, which is located ventrally (on the ventral side) in the upper part of its body. This genital opening is used for reproduction and is separate from the anus, which is located posteriorly.
3. Longer and stouter than male measuring 20 cm to 40 cm:
The female Ascaris is typically longer and stouter than the male counterpart. It measures around 20 cm to 40 cm in length. This difference in size is a characteristic feature of the species and is observed in many other organisms as well, where the female is larger than the male.
4. Shows all the above characters:
The correct answer option 'D' states that the female Ascaris shows all the above characters, which means that it possesses a conical posterior end, has a separate genital opening placed ventrally in the upper part, and is longer and stouter than the male measuring 20 cm to 40 cm.
In conclusion, the female Ascaris exhibits a conical posterior end, has a separate ventrally placed genital opening, and is larger in size compared to the male. These characteristics are important for its survival, reproduction, and navigation within the host's intestines.
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