Which of the following is the correct description of the

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Which of the following is the correct description of the term sex-ratio as used in the context of the census of population?

1. Number of males per 1000 females.
2. Number of females per 1000 males.
3. Number of females per 100 males.
4. Number of females in a sample of 1000 persons.

Correct Option: B

Sex ratio is used to describe the number of females per 1000 of males. In most sexually reproducing species, the ratio tends to be close to 1:1. According to Census 2011, the sex ratio of India is 943 females per 1000 males.