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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Related Questions
The figure given below is the human female reproductive system. Study the same and answer the following questions.
(a) Label the guidelines 1 to 6 shown in the figure.
(b) What is the normal gestation period in human ?
(c) Where are the sperms released during coitus ?
(d) Write two important functions of part 2.
(e) Mention the technical term for the fixing of developing zygote to the uterine wall.
The diagram below represents two reproductive cells A and B. Study the same and then answer the questions that follow:
(a) Identify the reproductive cells A and B
(b) Name the specific part of the reproductive system where the above cells are produced.
(c) Where in the female reproductive system do these cells unite?
(d) Name the main hormone secreted by the (1) ovary (2) testes.
(e) Name an accessory gland found in the male reproductive system and state the function of its secretion.
Given below is the outline of the male reproductive system. Name the parts labelled 1 to 8. Also name the corresponding structure of part (4) in the female reproductive system.
The figure given below is an important gonad of humans. Study the figure and answer the following questions.
(a) Identify the organ. Write its specific location in the body.
(b) Label the parts shown in the figure as 1 to 4.
(c) Write important functions of parts 2 and 4.
(d) Name one cellular structure and one hormone which are produced in part 3.
(e) Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).