Zoology - Human Reproduction Question with Solution | TestHub
Read the statements given below :
(i) The first movements of the foetus are usually observed during 7th months of pregnancy.
(ii) Umbilical cord possess 100 percent foetal blood.
(iii) At puberty, in female each ovary contain about 60,000 - 80,000 primary follicles.
Choose the correct statement from the above
Options:
Answer:
Solution:
The baby movement called 'quickening', is sensed around 18-20 weeks of pregnancy. Umbilical cord possess 50% of foetal blood and 50% of maternal blood. The umbilical cord is a tube that connects the mother and the baby during pregnancy, with three blood vessels-one vein that carries food and oxygen in the maternal body from the placenta to the baby and two arteries that carry waste from the fetus/baby back to the placenta. The primary oocyte is surrounded by a layer of granulosa cells to form primary follicle and large number of these follicles degenerates during from birth to puberty. Hence, at the time of puberty only 60,000-80,000 are left in each ovary.
