Sec. 88. (a) "Parent", for purposes of the juvenile law, means a biological or an adoptive parent. Unless otherwise specified, the term includes both parents, regardless of their marital status.
(b) "Parent", for purposes of IC 31-34-1, IC 31-34-8, IC 31-34-19, IC 31-34-20 and IC 31-35-2, includes an alleged father.
(c) "Parent", for purposes of IC 31-42, means a child's:
(1) biological father or mother;
(2) adopting father or mother; or
(3) court appointed guardian or custodian.