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Zoology 8th Edition by Stephen Miller,John Harley
النسخة 8الرقم المعياري الدولي: 978-0073028200Zoology 8th Edition by Stephen Miller,John Harley
النسخة 8الرقم المعياري الدولي: 978-0073028200 تمرين 13
Which of the following statements about polychaetes is true?
A) They have an open circulatory system.
B) Their dorsal nerve cord begins anteriorly at suprapharyngeal ganglia.
C) Most gas exchange occurs as a result of diffusion of gases across the body wall and parapodia. Some polychaetes have parapodial gills.
D) Most adult polychaetes use protonephridia in excretion.
A) They have an open circulatory system.
B) Their dorsal nerve cord begins anteriorly at suprapharyngeal ganglia.
C) Most gas exchange occurs as a result of diffusion of gases across the body wall and parapodia. Some polychaetes have parapodial gills.
D) Most adult polychaetes use protonephridia in excretion.
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Class Polychaeta is the largest class. P...
Zoology 8th Edition by Stephen Miller,John Harley
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