Given below are four matchings of an animal and its kind of respiratory organ:
$1.$ Silver fish - trachea
$2.$ Scorpion - book lung
$3.$ Sea squirt - pharyngeal gills
$4.$ Dolphin - skin
Choose the correct option.

  • A
    $3$ and $4$
  • B
    $1$ and $4$
  • C
    $1, 2$ and $3$
  • D
    $2$ and $4$

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Given below are four matchings of an animal and its kind of respiratory organ:
$I.$ Silver fish - Trachea
$II.$ Scorpion - Book lung
$III.$ Sea squirt - Pharyngeal gills
$IV.$ Dolphin - Skin
The correct matchings are:

The respiratory organs vary in different animals due to their

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