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प्रश्न
The normal gestation period in humans is:
पर्याय
270 days
290 days
280 days
295 days
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उत्तर
280 days
संबंधित प्रश्न
Explain the process of fertilization in human beings.
Describe placenta structure.
Suggest three contraceptive methods to control the size of human population, which is essential for the health and prosperity of a country. State the basic principle involved in each.
Newly formed DNA copies may not be identical at times. Give one reason.
Match the Column:
| no | Column A | Column B |
| 1 | Allele | Control of automobile exhaust |
| 2 | Leydig cells | Tourniquet |
| 3 | Utriculus | Alternate forms of genes |
| 4 | Snake bite | Dynamic equilibrium |
| 5 | Euro IV norms | Testosterone |
| Sudden change in genes | ||
| Static equilibrium |
Which structures in human female are equivalent to the following structures in the male?
- testes
- vas deferens
- penis
In each case say in what respect the structures are equivalent?
Pollen grains are formed by ______ division in locules of anthers.
Give the names:
Any two sexual diseases.
Multiple Choice Question:
What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?
Humans are classified as which type of reproducing organisms based on their mode of reproduction?
