Question

Choose the odd one out..

Choose the odd one out...Sperm,implantation, fertilisation,ovum,after birth

Rewrite the terms in correct logical sequence

Puberty, menopause,menstruals, menarche, reproductive age

State true or false with proper reason

Mother's blood flows into the foetus through placenta

MCQ-----When pregnancy doesn't occur,the life of corpus luteum is about a 4 b 10 c 1 4 d 28 days

Please answr it with reason as i m having exm tomorrow

Answer 1

1).All except implantation are natural processes or parts of anatomy, implantation requires manual intervention

But there is another possiblity and that is afterbirth, in this scenerio sperm, implantation (artificial insemination) and ovum are all part of the reproductive process whereas afterbirth is a byproduct of the process.

2).Menarche → Puberty → Reproductive age → Menstruals→ Menopause

3).No.
One of the placenta's jobs is to make sure blood from the mother and fetus never mixes. The placenta acts as an exchange surface between the mother and the fetus. Nutrients and oxygen are passed over by diffusion only. If the mother's and fetus's blood mixed, it could be deadly for both of them. If the mother and the fetus had different blood types, they might both die if their blood mixed.

4). (c)
If pregnancy does not take place, corpus luteum stops secreting progesterone and starts disintegrating after 14 days.