Immediately following conception the single cell is referred to as a ___ and the stage that begins here and ends with implantation is referred to as the ___ stage.
A) zygote; embryonic
B) embryo; germinal
C) fetus; fetal stage
D) zygote; germinal

Question

Quizplus · Accepted Answer

Immediately following conception, the single cell formed is referred to as a zygote, and the stage that begins here and ends with implantation is referred to as the germinal stage. Therefore, the correct answer is D, zygote; germinal. Option A is incorrect because embryonic stage begins after implantation. Option B is incorrect as germinal stage occurs before embryonic stage. Option C is incorrect as fetal stage begins from the ninth week of conception.

Immediately Following Conception the Single Cell Is Referred to as a ___