Q3 of 63 Page 160

List the substances which the foetus receives from the mother through the placenta. …………………………

Oxygen


Nutrients


The placenta primarily helps in the transfer of oxygen and nutrients from the mother’s blood to the foetus. Moreover, it also produces hormones to indicate the baby’s needs to the mother.


More from this chapter

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1

Name the three main regions of the human sperm, and briefly mention the function of each.

(i) Part …………………..Function ……………………………….


(ii) Part …………………Function …………………….


(iii) part ………………..Function ……………………

 2

Fill in the blanks:

(i) Implantation is the process of fixing of the _______ in a pit in the wall of _______


(ii) Heart and circulatory system are formed in the embryo by the end of _______ months of pregnancy.


(iii) A cord containing _______ Vessels connects the _______ With the foetus.

 4

How are carbon dioxide and urea, excreted by the foetus, removed? ……………………………………………………………………

 5

Does the foetus inside the mother’s uterus breathe? Yes/No