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What Is Fertilization?

abdominal gan...

Question

__________ abdominal ganglion in cockroach is the largest.

A

First

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B

Seventh

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C

Second

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D

Fourth

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Solution

The correct option is A Seventh
The ganglion in the 7th abdominal segment is the largest of all the abdominal ganglia and probably formed by the fusion of 3 pairs of ganglia.

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Similar questions

Q. Select the incorrect statements with reference to the nervous system in Periplaneta.
(I) The brain is mainly a sensory and an endocrine centre.
(II) All thoracic ganglia supply nerves to the parts of their respective segments only.
(III) The sixth abdominal ganglion is the largest of all the abdominal ganglia.
(IV) The frontal ganglion is connected to the ingluvial ganglion by a recurrent nerve.

Q. Identify the correct statements with reference to nervous system of Periplaneta
(i) Brain is mainly sensory and an endocrine gland
(ii) All thoracic ganglia supply nerves to the parts of their respective segments only
(iii) Sixth abdominal ganglion is the largest of all abdominal ganglia
(iv) Frontal ganglion is connected to ingluvial ganglion by a recurrent nerve

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Q. Abdominal segments in male and female Cockroach are

Boat shaped sternum in female cockroach is present in this abdominal segment:

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