Question.
Segmentation in the body is first observed in which of the following:
(a) Platyhelminthes
(b) Aschelminthes
(c) Annelida
(d) Arthropoda
Segmentation in the body is first observed in which of the following:
(a) Platyhelminthes
(b) Aschelminthes
(c) Annelida
(d) Arthropoda
Solution:
The body segmentation first appeared in the phylum, Annelida (annulus meaning little ring).
The body segmentation first appeared in the phylum, Annelida (annulus meaning little ring).