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Question
Describe briefly the ways how a mammalian embryo is nourished
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Solution
The mammalian embryo is nourished by the nutrients which diffuse through the placenta of the mother to pass through the umbilical cord to the embryo.
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RELATED QUESTIONS
Name the following:
The body part in which the embryo develops.
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 |
Complete the following table by writing the name of the structure or the function of the given structure:
| Structure | Function | ||
| 1 | Corpus luteum | 1 | …………… |
| 2 | ……………. | 2 | Produces male gametes in mass |
| 3 | Placental disc | 3 | …………………….. |
| 4 | . ……………. | 4 | Increases the force in uterine contractions during child birth |
| 5 | Umbilical cord | 5 | …………………. |
| 6 | Fallopian tube | 6 | ………………… |
Describe briefly the ways how a mammalian embryo is respires
Study the diagram given below and then answer the questions that follow:
(i) Name the parts labeled 1 and 2. State the function of each part.
(ii) State any one function of the amniotic fluid.
(iii) What is the role of the umbilical cord in the development of the fetus?
(iv) Name the part in the diagram which is endocrine in nature.
Name the Following
A hollow pear-shaped muscular organ that holds, nourishes and protects the fetus.
Complete the following sentences with appropriate word:
The placenta is ________permeable
Write the functional activity of the following structure:
Amnion
How are carbon dioxide and urea, excreted by the foetus, removed?
Which of the following cannot pass readily through the placenta to the foetus?
