The term for the developing organism from eight completed weeks after fertilization through birth is called the?

The term for the developing organism from eight completed weeks after fertilization through birth is called the?

• A. Embryo
• B. Zygote
• C. Fetus
• D. Neonate

Answer: (C)

Understanding prenatal development stages helps explain the terminology. After fertilization, the organism progresses from a zygote to an embryo during the early weeks. From eight completed weeks after fertilization through birth, it is called a fetus. This naming reflects a transition from organ formation to growth and refinement of already formed structures, with major organs developed by the end of the first trimester and continued growth afterward. So the term for the described timeframe is fetus. The zygote is the fertilized egg before implantation, the embryo covers roughly the first eight weeks, and a neonate is a newborn after birth.

Understanding prenatal development stages helps explain the terminology. After fertilization, the organism progresses from a zygote to an embryo during the early weeks. From eight completed weeks after fertilization through birth, it is called a fetus. This naming reflects a transition from organ formation to growth and refinement of already formed structures, with major organs developed by the end of the first trimester and continued growth afterward. So the term for the described timeframe is fetus. The zygote is the fertilized egg before implantation, the embryo covers roughly the first eight weeks, and a neonate is a newborn after birth.