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Question
Differentiate
Fetus and Embryo.
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Solution
| Fetus | Embryo |
| It is an unborn infant after two months of intra-uterine life till birth. | It is an unborn infant during the first two months of intra-uterine life. |
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RELATED QUESTIONS
Give appropriate biological or technical terms for the following :
The fluid which surrounds the foetus
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 |
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.
Name and describe very briefly, the stages in the development of human embryo.
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
Describe briefly the ways how a mammalian embryo is protected
Give Technical Term:
The part in the uterus which is concerned with the supply of nutrition from the mother to the fetus.
Match the respiratory surfaces to the organisms in which they are found.
| Organ/ cells | Hormones | ||
| (i) | Corpus luteum | (a) | HCG |
| (ii) | Leydig's cells | (b) | Estrogen |
| (iii) | Placenta | (c) | Progesterone |
| (iv) | Graafian follicle | (d) | Testosterone |
How are carbon dioxide and urea, excreted by the foetus, removed?
Mother's blood flows into the foetus through placenta.
