Young boys at puberty start growing facial hairs. This is an example of

  • A
    Secondary sexual characters
  • B
    Appearance of primitive characters
  • C
    Metamorphosis
  • D
    Protective colouration

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Similar Questions

How many sperms are formed by four primary spermatocytes?

Head region of the sperm contains

What is the process of transformation of spermatids into spermatozoa called?

In the diagram of a section of a Graafian follicle,different parts are indicated by alphabets; choose the answer in which these alphabets have been correctly matched with the parts they indicate.

$A$: Middle piece of sperm is called the powerhouse.
$R$: It contains mitochondria.

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