First sign of growing foetus may be noticed by listening to heart sound carefully through stethoscop

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2.Human Reproduction

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The first sign of the growing foetus may be noticed by listening to the heart sound carefully through the stethoscope. Embryo's heart is formed _________.

A

By the end of the second month of pregnancy

B

By the end of first trimester

C

After one month of pregnancy

D

During fifth month

Solution

Factual information.

Standard 12

Biology

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