Q. Presence of gills in the tadpole of frog indicates that

 1994  167 Chhattisgarh PMTChhattisgarh PMT 2006 Report Error

Solution:

Presence of gills in the tadpole of frog indicates that frog evolved from gilled ancestors. According to Ernst Haeckel theory of Biogeneric, "ontogeny (development of embryo) is recapitulation of phytogeny" (the ancestral sequence).