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प्रश्न
Does the foetus inside the mother's uterus breathe?
विकल्प
Yes
No
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उत्तर
No
Explanation:
During pregnancy, the foetus breathes differently than a newborn. The exchange of gases, including oxygen and carbon dioxide, occurs through the placenta. The placenta transports oxygen from the mother's blood to the foetus, while carbon dioxide created by the foetus is returned to the mother's bloodstream for removal. After delivery, the baby's lungs function, allowing them to breathe.
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संबंधित प्रश्न
Match the items in column I with those in column II and write down the matching pairs (some may not match)
| Column I | Column II | ||
| a | Acrosome | 1 | An embryo which looks like human baby |
| b | Gestation | 2 | Luteinizing hormone |
| c | Menopause | 3 | ovum producing cells |
| d | Foetus | 4 | complete stoppage of menstrual cycle |
| e | Oogenesis | 5 | spermatozoa |
| f | Ovulation | 6 | Complete stoppage of menstrual cycle. |
| 7 | Time taken by a fertilized egg till the delivery of baby |
State whether the following statements are TRUE (T) or FALSE (F):
Rewrite of the wrong statements by correcting only one word either at the beginning or at the end of the sentences.
Gestation period in humans is about 380 days.
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 between:
Impotency and sterility
Differentiate
Uterus and Urethra.
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
Give Technical Term:
A structure which connects the placenta with the fetus.
Mention any two functions of the human foetal placenta.
List the substances which the foetus receives from the mother through placenta.
How are carbon dioxide and urea, excreted by the foetus, removed?
