Answered

In humans, the placenta is essential to the embryo for

(1)nutrition, excretion, and reproduction

(2)respiration, nutrition, and excretion

(3)movement, reproduction, and nutrition

(4)coordination, movement, and growth

Verified Answer :

oopsydaisy

The placenta is essential to an embryo in a human for nutrition, excretion, and reproduction. The placenta is where the embryo gets all of its nutrition from. The embryo relies on the placenta for everything to make it live and grow.

Erudite1

In humans, the placenta is essential to the embryo for RESPIRATION, NUTRITION AND EXCRETION.
The placenta refers to an organ in the uterus of pregnant mammals that is responsible for nourishing and maintaining the unborn baby through the umbilical cord. Th placenta has many functions but primarily it plays critical roles in the nutrition, respiration and excretion of the fetus. Its other functions include: production of hormones, production of immunity for the fetus for prevention from infections, etc. 

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