In pheretima removal of these ganglia results in the loss of motor control.

Sub- pharyngeal ganglia

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

Sub- oesophageal ganglia

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

Supra- pharyngeal ganglia

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

Supra- oesophagal ganglia

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

Open in App

Solution

The correct option is A Sub- pharyngeal ganglia
The nervous system in Annelida is made up of a cerebral ganglia and a ring of nerves around the pharynx which connects the brain to the sub-pharyngeal ganglia. Stimuli from the skin are transmitted by sensory fibres to the nerve cord. Ganglia change the sensory impulse into motor impulse which passes on to the muscle cells. In Pheretima, the removal of sun pharyngeal ganglia will result in loss of motor controls.

Suggest Corrections

Similar questions

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. Pharyngeal nephridia of earthworm Pheretima occur in segments

Q. Pharyngeal nephridia of Pheretima are found in segments

Q. In the blood circulation of Pheretima, the blood collected by lateral oesophageal blood vessel flows into supra oesophageal blood vessels through

Q. Number of pairs of valves found in lateral oesophageal heart of Pheretima is

Join BYJU'S Learning Program