Advertisements
Advertisements
प्रश्न
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
विकल्प
A is True and R is False.
A is False and R is True.
Both A and R are True.
Both A and R are False.
Advertisements
उत्तर
Both A and R are True.
APPEARS IN
संबंधित प्रश्न
What is the significance of amniotic fluid?
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Placenta
- What are the two sources that form placenta?
- Name any two main substances which pass from foetus to mother through placenta.
- Name any two hormones it produces.
Differentiate
Fetus and Embryo.
The diagram given below is that of a developing human foetus in the womb. Study the same and then answer the questions that follow:
- Name the parts '1' to '5' indicated by guidelines.
- What term is given to the period of development of the foetus in the womb?
- How many days does the foetus take to be fully developed?
- Mention two functions of the parts labelled ‘2’ other than its endocrine function.
- Name the hormone (anyone) produced by the part labelled ‘2’.
- What is the function of the part marked ‘3’?
Name the Following
A hollow pear-shaped muscular organ that holds, nourishes and protects the fetus.
Write the functional activity of the following structure:
Amnion
During pregnancy, which hormones are secreted by the placenta?
All are functions of placenta, EXCEPT ______.
Name the following:
Two hormones secreted from placenta.
List the substances which the foetus receives from the mother through placenta.
