A fully developed foetus initiates its delivery from the mother’s womb. Justify the statement.

Delivery of developed foetus is

Foetus is considered a parasite on mother. Justify.

Delivery of developed foetus is scientically called as

The fully developed foetus gives signals for uterine contractions by secreting………… hormone.

Placenta helps in the removal of waste material from the foetus as well as protects the foetus against diseases. Justify the statement.