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Question
Does the foetus inside the mother's uterus breathe?
Options
Yes
No
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Solution
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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RELATED QUESTIONS
What is the significance of amniotic fluid?
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 |
Give Reasons
The full-grown human embryo respires but does not breathe.
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
Complete the following sentences with appropriate word:
The umbilical cord connects _______
The haemoglobin of a human foetus ______.
Mention any two functions of the human foetal placenta.
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
How are carbon dioxide and urea, excreted by the foetus, removed?
Which of the following cannot pass readily through the placenta to the foetus?
