The spring of shared evolutionary characteristics

Chordates victories Posay moras | Urochordata (urinates) Cephobchordata (rocks) philia (reptiles Chondrichthyes sharks and rays) Agatha (fewer vertebrates) Osteichthyes (bony fish Amphibia (togs and salamanders Egg with a shell Marma legs lungs Figure 1 jaw, teeth two sets of paired appendages vertebrae This phylogenetic tree represents Types or the evolutionary ancestor de combat relationships between different vertebrate groups Biologists separate members into groups teed on the spring of shared evolutionary characteristics such as har in mammals ancestral chordate Figure 1 shows the phylogenetic tree for chordates. 1. Why did the tunicates and lancelets not include as vertebrates and why did they include as chordates 2. Draw the smallest clade that represents birds and reptiles 3. Which characteristic helped to differentiate fish from other vertebrates 4. Which character is common for all mammals 5. Explain in your own words the relationship between words on the diagram such as “teeth” and the groups of organisms below (earlier periods) and above (later periods) 6. What common characteristics do you think fits in the cage provided for reptiles, birds, and mammals