A) Diaphragm
B) Skin
C) Buccal cavity
D) Lungs
Correct Answer: A
Solution :
Respiration is bringing oxygen from outside air into the tissues of the body through respiratory organ, facilitating the oxidation of the biological macromolecules. Diaphragm is involved in pulmonary ventilation and is not related with frog. Frog respires in 3 different Cutaneous respiration is carried out in water. During winter sleep and aestivation, it is the only mode of expiration in frog. Buccopharyngeal respiration occurs partially on the land and partially immersed in water. During this mode of respiration, the mouth and glottis are tightly closed, while the nares are kept open and two sets of muscles operate during the process, ie, sternohyal muscles and petiohyal muscles. Pulmonary respiration is less frequent than cutaneous and buccopharyngeal respiration.
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