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प्रश्न
Explain how they act as effective contraceptives in human females.
उत्तर
IUDs increase the phagocytosis of sperms in the uterus and the copper ions released decrease sperm motility and prevent fertilisation.
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संबंधित प्रश्न
A woman has certain queries as listed below, before starting with contraceptive pills. Answer them
What do contraceptive pills contain and how do they act as contraceptives?
Study the graph given below and answer the question that follows:
(i) The curve 'b' is described by the following equation :
`"dN"/"dt" = "r""N" {"K-N"/"K"}`
What does 'K' stand for in this equation? Mention its significance.
(ii) Which one of the two curves is considered a more realistic one for most of the animal populations?
(iii) Which curve would depict the population of a species of deer if there are no predators in the habitat? Why is it so?
Probability of four sons to a couple is ______.
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in non-directional manner?
IUDs stands for ______.
Tying up or removing a small part of fallopian duct is called ______.
Which of the following is hormone releasing?
One of the legal methods of birth control is:
In the periodic abstinence method, coitus avoids from ______.
According to a survey conducted by the Government of India in the year 1950, the population of the country was 350 million. In the next survey conducted in the year 2010, the population had reached above 1000 million.
- List any two reasons for this rise in the population.
- Suggest any two steps which should be taken by the Government to control this rise.
- How does the population explosion affect the growth of a country?
- What is the difference between the natural and artificial contraceptive methods? Give one example of each method.
