Metameric segmentation is the characteristic of
(a) mollusca and chordata
(b) platyhelminthes and arthropoda
(c) echinodermata and annelida
(d) annelida and arthropoda.
(a) mollusca and chordata
(b) platyhelminthes and arthropoda
(c) echinodermata and annelida
(d) annelida and arthropoda.