At the start of gastrulation, a long, thin depression known as the primitive ________ forms on the surface of the epiblast.
A) furrow
B) node
C) streak
D) groove
E) yolk

Question

Quizplus · Accepted Answer

The correct term is "primitive streak," which is a structure that forms on the surface of the epiblast during the early stages of embryonic development, marking the beginning of gastrulation.

At the Start of Gastrulation, a Long, Thin Depression Known