Which of the following respiratory organs are present in spiders and scorpions?

  • A
    Book lungs
  • B
    Gills
  • C
    Spiracles
  • D
    Ctenidia

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The skin is a respiratory organ in ...........

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.

In which of the following animals does the diaphragm play no role in respiration?

Select the correct option regarding the respiratory organs in different animals:

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