Question

Explain the role of placenta in the
development of human embryo.
(b) Give example of two bacterial and two viral sexually transmitted diseases. Name the most effective contraceptive which prevents spread of such diseases.​

Answer 1

2 diseases

Syphilis, Gonorrhea

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Answer 2

Answer:

The placenta plays a key role in the nutrition of the fetus.

b). viral disease HIV and harpes.

bacteral disease. gonorrhea and syphilis