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Vertebrate Zoology

Living in water adaptations

QuestionAnswer
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
Created by: LionsandGiants