Question

1. Explain the terms:
(a) implantation
(b) placenta
2. What is the average duration of human pregnancy?

Answer 1

Implantation is when zygote gets attached to uterus wall
Placenta is disc like tissue formed to provide nourishment to fetus
Duration is 280days I. Eabout 40 weeks (9months)

Answer 2

1 Implantation:-It is the attachment of the fertilized egg /zygote to the wall of uterus.Implantation is necessary for the futher development of the zygote.
Placenta:- It is a disc like structure or a connection between mother and the growing baby. Through placenta the baby gets nutrition ,oxygen and all required things fRom the mother.

2 The average duration of human pregnancy is 9months .
But in certain cases it may be 9 months + 10 days or in some cases it may be 9 months - 10 days

Hope it helps uhhhhh