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Question
Respiratory organ present in spider is
Respiratory organ present in spider is
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Solution
The correct option is D Book lungs
A book lung is a type of respiration organ used for atmospheric gas exchange that is found in many arachnids, such as scorpions and spiders. Each of these organs is found inside an open ventral abdominal, air-filled cavity (atrium) and connects with the surroundings through a small opening for the purpose of respiration. Book lungs are not related to the lungs of modern land-dwelling vertebrates. Their name describes their structure. Stacks of alternating air pockets and tissue filled with hemolymph (the arthropod equivalent of blood) give them an appearance similar to a "folded" book. Lungs, gills and skin are absent in spider.
Therefore, the correct answer is option B.
A book lung is a type of respiration organ used for atmospheric gas exchange that is found in many arachnids, such as scorpions and spiders. Each of these organs is found inside an open ventral abdominal, air-filled cavity (atrium) and connects with the surroundings through a small opening for the purpose of respiration. Book lungs are not related to the lungs of modern land-dwelling vertebrates. Their name describes their structure. Stacks of alternating air pockets and tissue filled with hemolymph (the arthropod equivalent of blood) give them an appearance similar to a "folded" book. Lungs, gills and skin are absent in spider.
Therefore, the correct answer is option B.
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