What is the protruding part of the larynx visible in boy’s throat called?


Adam’s Apple.

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What changes occur in the voice of boy’s at the onset of puberty?


At puberty the voice of the boys starts deepening and may become hoarse temporarily.

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What happens to voice box at puberty?


Puberty results in the growth of the voice box or the larynx. Boys develop larger voice
boxes which can be seen as a protrudung part of the throat, it is called Adam's apple. The voice box is small in girls and is hardly visible

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Give any one secondary sexual character of boys.


Growth of moustaches and beard is a secondary sexual character of boys.

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What are those characters called, which distinguish a boy from a girl?


Secondary sexual characters.

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