If the head of a cockroach is removed,it may live for a few days because:

  • A
    the head holds a $1/3^{\text{rd}}$ of a nervous system while the rest is situated along the dorsal part of its body.
  • B
    the supra-oesophageal ganglia of the cockroach are situated in the ventral part of the abdomen.
  • C
    the cockroach does not have a nervous system.
  • D
    the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.

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