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प्रश्न
Describe briefly the ways how a mammalian embryo is respires
उत्तर
The mammalian embryo respires by the diffusion of oxygen through the placenta to enter the bloodstream of the embryo. The waste carbon dioxide passes through the umbilical cord and leaves through the placenta.
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संबंधित प्रश्न
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite the wrong statement by correcting only one word either at the beginning or at the end of the sentence.
Uterus is also known as birth canal.
Given below are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them.
Gestation
• What is its meaning?
• How long does it normally last?
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Implantation.
- The development stage that undergoes this process.
- The approximate time after fertilisation, when it occurs.
What is Placenta?
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
Name the Following
The expulsion of the fetus from the body of the mother.
Write the functional activity of the following structure:
Amnion
List the substances which the foetus receives from the mother through placenta.
How are carbon dioxide and urea, excreted by the foetus, removed?
Does the foetus inside the mother's uterus breathe?
