Given below are four matchings of an animal and their respiratory organ. The correct matching is :
A. Silver fish - trachea
B. Scorpion - book lung
C. Sea squirt - pharyngeal gills
D. Dolphin - skin
A
A and D
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B
A, B and C
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C
B and D
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D
C and D
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Solution
The correct option is B A, B and C The correct matchings are :
Silver fish - Trachea - is the respiratory organ
Scorpion - book lung - is a form of a respiratory organ for atmospheric gas exchange which is found in certain air-breathing arachnid arthropods like scorpions and some spiders.
Sea squirt = Pharyngeal gills - the gill slits are present in the pharynx through which it takes in food and oxygen.
Dolphin is an aquatic mammal and breathes through lungs.