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Nutrition

the embryo is...

Question

the embryo is surrounded with fluid and the foetus's lungs are filled with fluid,and it cannot breathe. why does it not suffocate?

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Solution

A foetus receives all the nutrients and oxygen through the placenta. Placenta forms a passage between the mother and foetus for the gaseous exchanges and also supplies nutrients to the foetus. Thus, the foetus does not suffocate in the uterus.

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A fluid filled double membranous layer surrounds the lungs. Name it and mention its important function.

Q. Explain briefly: [5 MARKS]
(i) The oviducal funnel is lined with cilia.
(ii) The mother's blood does not circulate through the embryo.
(iii) The umbilical cord is the life line of the foetus.
(iv) The foetus respires but does not breathe.
(v) Chances of pregnancy to occur are most favourable around the 14-15th day of the menstrual cycle.

Q. Choose the correct answers from the alternatives given.
The a fluid-filled sac, surround and protects the embryo from mechanical shocks and keeps it from drying out

Q. Give appropriate biological or technical terms for the following.
The fluid which surround the foetus.

Name the following :

(a) The fluid surrounding the developing embryo.

(b) The body part in which the embryo develops.

(c) The membrane which protects the foetus and encloses a fluid.

(d) the canal through which the testes descend into the scrotum just before birth in human male child.

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