If the head of cockroach is removed, It may live for few days because:
Athe supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
B the cockroach does not have nervous system
C the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its bo dy.
D the head holds a 1/3rd1/3rd of a nervous system while the rest is situated along the dorsal part of its body.