From earliest to latest,the overall sequence of early development proceeds in which of the following sequences?
A)gastrulation → organogenesis → cleavage
B)ovulation → gastrulation → fertilization
C)cleavage → gastrulation → organogenesis
D)gastrulation → morphogenesis → ovulation
E)organogenesis → morphogenesis → cleavage

Question

Quizplus · Accepted Answer

The correct sequence of early development is cleavage (cell division), followed by gastrulation (formation of the germ layers), and finally organogenesis (development of organs and tissues). Option C is the only one that lists the developmental events in the correct order. Option A is incorrect because organogenesis occurs after gastrulation. Option B is incorrect because ovulation occurs before fertilization, and fertilization occurs before gastrulation. Option D is incorrect because ovulation is not a stage of early development, and morphogenesis occurs after gastrulation. Option E is incorrect because morphogenesis is a part of organogenesis, and cleavage occurs before gastrulation.

From Earliest to Latest,the Overall Sequence of Early Development Proceeds