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प्रश्न
Describe briefly the ways how a mammalian embryo is respires
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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.
APPEARS IN
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 |
Differentiate between:
Impotency and sterility
Describe the functions of placenta
The diagram given alongside is that of a developing human foetus in the womb. Study the same and answer the questions that follows:
Name the parts ‘1’ to ‘5’ indicated by guidelines
How is Placenta formed? What are its functions?
The diagram given below shows an embryo in the uterus of mammal. Label the parts indicated.
Explain the term Fetus
Give Technical Term:
Name a membrane that surrounds the fetus and secretes a protective fluid.
Give Technical Term:
A structure which connects the placenta with the fetus.
Complete the following sentences with appropriate word:
The embryo inside the uterus is protected from jerks or mechanical shocks by ________
