High-pitched voice is a characteristic of which of the following?

  • A
    Middle-aged person
  • B
    Adult male
  • C
    Boys
  • D
    Female

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The period of adolescence is.........

The period between $12$ and $18$ years of age in a person is known as adolescence.

Which of the following is an example of a polyoestrous mammal?

Match Column-$I$ with Column-$II$:
Column-$I$Column-$II$
$(A)$ Mons pubis$(1)$ Embryo formation
$(B)$ Antrum$(2)$ Sperm
$(C)$ Trophectoderm$(3)$ Female external genitalia
$(D)$ Nebenkern$(4)$ Graafian follicle

Ovulation takes place in/on

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