Question

Which of the following statements is incorrect about the nervous system earthworm?

• A. Nervous system is basically represented by ganglia arranged on ventral nerve cord
• B. In 3rd and 4th segment, the nerve cord bifurcates and joins the cerebral ganglia dorsally to form a nerve ring.
• C. The cerebral ganglia along with other nerves in the ring integrate sensory input as well as command muscular responses of the body
• D. None of these

Answer 1

The correct option is A Nervous system is basically represented by ganglia arranged on ventral nerve cord

The nervous system of earthworm consists of cerebral ganglia or bilobed brain present dorsally, sub pharygeal ganglia, circum pharyngial ganglia and ventral nerve cord.

So, the correct answer is 'Nervous system is basically represented by ganglia arranged on ventral nerve cord'