EBIO 1220 Lecture 10: 2/10/17
16 Feb 2017
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Practice test due monday at 6 pm. Clicker question examine the following phylogenetic tree of fishes alive today. B) fish originated in freshwater and subsequently invaded the oceans. Of bony fish that are alive today, their recent evolutionary origins trace back to freshwater, not the ocean. Breathe through skin and enlarged gill chamber. Where they grab onto a bubble of air and hold onto it. Barracuda (bony fish: i, iv, i and iv, iii and iv, all of the above. Reptiles, birds and mammals (usually internal eggs) [the group formerly known as] birds (8,600 species) Clicker question what traits would you expect the most recent common ancestor of amphibians and reptiles to exhibit: vertebrate. Amniotic egg allows you to divorce yourself from water and amphibians are still tied to water because their eggs are shell less: i, i and iii, i, ii, and iii, iii, iii and iv. Location: australian region, north & south america.
