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Q.
Which of the following structure is connected with double ventral nerve cord in Periplaneta americana?
NTA AbhyasNTA Abhyas 2020Structural Organisation in Animals
Solution:
In Cockroach, the brain is represented by Supra-oesophageal ganglion whereas from Sub-oesophageal ganglion double ventral nerve cord originates having nine segmentally arranged ganglia arise on ventral side of thorax and abdomen.