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- Describe four shared derived characters of vertebrates.ZOOLOGY TOPICBased on the illustration below (Figure 1.1, describe how Homo sapiens isrelated to other animals such as the mammals and bony fishes (Osteichthyes).List four very different anti-predator adaptations used by different invertebrate deuterostomes and the names of each animal group (common names are fine). Please only do invertebrae NOT vertebrae‘s. Thank you
- Which of the following characteristics are indicative of mammals? post-orbital bar/closure homodont teeth heterodont teethDiscuss the traits in the body (not head/skull) that define Primates and set them apart from other mammal groups.Match the benefit to the correct chordate adaptation. (match each number to the correct letter) 1. allows organisms to walk on land 2. allows organisms to lay eggs on land, without water 3. allows organisms to generate their own heat 4. provides a rigid structure for muscles A.bony skeleton B. Ectotherm C. Tetrapod D. Amniotic eggs E. Endotherm F. Seeds
- Mammals belong to a group of amniotes known as synapsids. Three major lineages of mammals had emerged by the early Cretaceous period. In a tabulated form, compare these three lineages to illustrate their diversity in terms of: a. Embryonic developmen, b. How the young are fed and c. Period of gestationDescribe structural and functional adaptations that appeared in early amniotes that foreshadowed the mammalian body plan. Which mammalian attributes do you think were especially important to successful diversification of mammals?Fill in the blanks with synapomorphic, symplesiomorphic, or neither Mesoderm is a ___ feature of chordates, and a ___ feature of vertebrates, but mesectoderm (neural crest) is a ___ feature of chordates, and a __ feature of vertebrates
- Amphioxus long has been of interest to zoologists searching for a vertebrate ancestor. Explain why amphioxus captured such interest and why it no longer is considered to resemble closely the direct ancestor of the vertebrates.Nimravids Skeleton vs Siberian Tiger Skeleton vs Smilodon Necator SkeltonCompare and contrast the appearance of specific bones in the skeleton. Compare the skeleton of the extinct creatures with the extant creature, and with themselves. How might the variation in anatomy link to the likely function? Compare species' skeletal anatomy based on life history (aquatic vs terrestrial). What are other interesting factors noted in the skeletons?Figure 15.33 Which of the following statements about common features of chordates is true?a. The dorsal hollow nerve cord is part of the chordate central nervous system.b. In vertebrate fishes, the pharyngeal slits become the gills.c. Humans are not chordates because humans do not have a tail.d. Vertebrates do not have a notochord at any point in their development; instead, they have a vertebral column.