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Question
Given below is the name of certain stage/substance related to reproduction and found in human body. Answer the questions related to it.
Foetus.
- Where is it contained?
- How does it differ from embryo?
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Solution
- The foetus is contained in the uterus.
- Embryo: a growing egg after fertilisation until the main parts of the body and the internal organs have started to take shape.
Foetus: When embryo starts having a look of a baby (from 7 weeks of gestation and onwards).
RELATED QUESTIONS
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 | ………………… |
Given below are the names of certain stages/substances related to reproduction and found in human body. Answer the questions related to them.
Gestation
• What is its meaning?
• How long does it normally last?
Correct and rewrite the statements by changing the biological term that is underlined for the statement:
The protective sac which develops around the developing embryo is called the Pericardium.
What changes occur at the time of birth?
Explain the term Fetus
Name the Following
A hollow pear-shaped muscular organ that holds, nourishes and protects the fetus.
Assertion (A): The foetus respires but does not breathe.
Reason (R): The maternal blood supplies oxygen to the foetus through placenta.
Write one sentence using the following term pertaining to reproduction in humans.
Placenta
Does the foetus inside the mother's uterus breathe?
Distinguish between the following pair:
Placenta and umbilical cord
