Zoology - Human Reproduction Question with Solution | TestHub

Human pregnancy lasts for nine months and it officially begins after implantation i.e.$8^{\mathrm{t}\mathrm{h}}$day after fertilization. The sign of developing foetus is first recorded at the end of$1^{\mathrm{s}\mathrm{t}}$month as heart sounds are clear and audible. The foetus develops limbs and digits by the end of 60 days. Major systems also develop in the third month of pregnancy. The first movements of foetus and appearance of hair (known as Lanugo) on head is seen during fifth month.