The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belongs to the phylum

Options

(a) Annelida
(b) Mollusca
(c) Cnidaria
(d) Arachnida and crustacea

Correct Answer:

Arachnida and crustacea

Explanation:

The animal with bilateral symmetry in young stage and radial pentamerous symmetry in the adult stage belongs to the phylum Arachnida and crustacea.