Biology
The diagram below is that of a developing human foetus in the womb. Study the same and answer the questions that follow:
(a) Name the parts '1' to '5' indicated by guidelines.
(b) What term is given to the period of development of the foetus in the womb?
(c) How many days does the foetus take to be fully developed?
(d) Mention two functions of the parts labelled '2' other than its endocrine functions.
(e) Name any one hormone produced by the part labelled '2'.
Reproductive System
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Answer
(a) The parts 1 to 5 are:
- 1 → Umbilical cord
- 2 → Placenta
- 3 → Amnion
- 4 → Mouth of uterus
- 5 → Muscular wall of uterus
(b) Gestation
(c) 280 days
(d) Placenta provides the foetus with oxygen and nutrients. In addition, the placenta also removes carbon dioxide and waste products of the foetus.
(e) Progesterone
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(a) Label the guidelines 1 to 6 shown in the figure.
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(b) Name the specific part of the reproductive system where the above cells are produced.
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