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Respiratory organs in aquatic arthropods like crayfish, prawns, and molluscs like Unio are

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Important Questions on Breathing and Exchange of Gases

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Pulmonary respiration is most well-developed in
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Which structure in human respiratory system is not involved in conditioning of air?
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A thin-elastic cartilaginous flap which prevents the entry of food into the larynx is known as
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At which level of thoracic vertebra, does trachea divide?
MEDIUM
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Which membrane covers the lungs and provides protection?
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Select the last step involved in respiration.