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

ii an iv

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

ii and iii

No worries! We‘ve got your back. Try BYJU‘S free classes today!

i and iii

No worries! We‘ve got your back. Try BYJU‘S free classes today!

i and iv

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B ii an iv
A. ii and iv
Explanation: The nervous system of cockroach promotes the survival of quickly activating the running responses, which is served by the three thoracic glands of cockroach to their respective segments. The frontal ganglion is connected with the supra-oesophageal ganglion. A nerve passes backward from it and connects the frontal ganglion with the ingluvial ganglion.

Suggest Corrections

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.

Consider the following four statements regarding the nervous system of a cockroach and choose the correct option indicating as true (T) or false (F) respectively.

1. The Brain of a cockroach is primitive and is made of 2 supra-oesophageal and 1 sub-oesophageal ganglia, connected by 2 circum-oesophageal connectives.

2. It has 3 thoracic and 6 abdominal, segmental ganglia.

3. All the Sensory organs are under the control of the brain directly.

4. Receptors are of tactile, chemo and photo sensory in nature

Q. Motor neurons of the frontal nerve to the frontal ganglion join the sensory neurons of the labral nerve to form the labrofrontal nerve arising from the tritocerebrum.

Q. __________ abdominal ganglion in cockroach is the largest.

Q. Q. Consider the following statements with reference to Nerves:Which of the above given statements is/are correct?

1 and 3 only
1 and 2 only
1 only
1, 2 and 3

Join BYJU'S Learning Program