MCQ
At present total population of the world is about
- A$4.5$ billions
- B$5.2$ billions
- ✓$6.2$ billions
- DNone of the above
(c) The population of the world has steadily increased to $5$ billion on July $11$, $1987$ and $6$ billion on October $12$, $1999$ and $6.2$ billion on $2001$.
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| Column-I | Column-II | ||
| (p) | Leydig cells | (i) | Help in the lubrication of the penis |
| (q) | Sertoli Cells | (ii) | Secretion of progesteron |
| (r) | Corpus luteum | (iii) | Secretion of Androgens |
| (s) | Bulbourethral gland | (iv) | Provide nutrition to the sperm |