Which statement about lungs and gas bladders is true? A) the first osteichthyans had lungs and these lungs were later converted to gas bladders in actinopterygians B) the first osteichthyans had gas bladders and these gas bladders were later converted to lungs in sarcopterygians C) after the two lineages branched apart, actinopterygians evolved gas bladder and sarcopterygians evolved lungs"
Which statement about lungs and gas bladders is true? A) the first osteichthyans had lungs and these lungs were later converted to gas bladders in actinopterygians B) the first osteichthyans had gas bladders and these gas bladders were later converted to lungs in sarcopterygians C) after the two lineages branched apart, actinopterygians evolved gas bladder and sarcopterygians evolved lungs"
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1) Which statement about lungs and gas bladders is true?
A) the first osteichthyans had lungs and these lungs were later converted to gas bladders in actinopterygians
B) the first osteichthyans had gas bladders and these gas bladders were later converted to lungs in sarcopterygians
C) after the two lineages branched apart, actinopterygians evolved gas bladder and sarcopterygians evolved lungs"
2) Why are sharks reliant on ram ventilation unable to breath while remaining in place like other fish do?
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