Why are cocrach blood yellowish or …
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Yogita Ingle 7 years ago
Cockroach blood is not red because they do not use hemoglobin to carry oxygen. In fact their bloodstream is not used to carry oxygen either. They use a system of pipes called tracheae to bring the oxygen and remove carbon dioxide from their tissues. The blood does not contain haemoglobin, as unlike in chordates, the respiratory system and the circulatory system are completely unconnected.
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