1. Tardigrade
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  4. In cockroach abdominal ganglion is absent in this segment:

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Q. In cockroach abdominal ganglion is absent in this segment:

EAMCETEAMCET 2004

Solution:

In cockroach, ventral nerve cord bears 3 thoracic ganglia and six abdominal ganglia. In 5th segment, abdominal ganglia are absent.