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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 20
Unlike sea stars, in ophiuroids, the tube feet are extended by
A) contraction of muscles at their bases.
B) ampullae forcing water into the feet.
C) hydrostatic pressure.
D) contraction of their suction disks.
E) contraction of lateral canals.
A) contraction of muscles at their bases.
B) ampullae forcing water into the feet.
C) hydrostatic pressure.
D) contraction of their suction disks.
E) contraction of lateral canals.
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Zoology 8th Edition by Stephen Miller,John Harley
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