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Vertebrate Zoology
Living in water adaptations
Question | Answer |
---|---|
Respiration of Pre-Vertebrates | Solely across body wall thus constraining body size; High surface area to volume ratio needed |
Respiration of Vertebrates | Gills allowed for a high surface area; Allowed for more size, activity, and niches; |
Respiration in Anoxic Environments | Gill chambers; Gas bladder; Swallow air; Air in mouth |
Buoyancy | Gas bladder allows for more than a benthic environment; Retaining fat/oil in livers |
Vision | The lens, not the cornea, does the focusing |
Olfactory and Taste | Taste receptors in and around mouth; Chemosense all over body, needing moist environment; Allows sense of gradients |
Touch | Lateral line is a canal with pores and a neuromast organ for detection of water pressure changes |
Electroreception | Electrolocation or as a defense |