Biology Lab

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Part A – (possible 80 points)

For Part A there are 4 parts you need to include – see numbered bullets below. You are to make a chart detailing the acquisition of traits from sponges to mammals.It may be done in the form of a table, a concept map, an outline, or a phylogenetic tree. The following traits must be included and defined, along with the evolutionary advantage(s) of each and the organism that first exhibited the trait.

1) List the traits in the order in which they appear from an evolutionary standpoint. You will start with multicellularity, then tissues, then radial symmetry and so on and so forth. (20 points)

2) Define all traits. (20 points)

3) Determine the organism the trait was first found in. Be sure to list only the organism the trait was FIRST found in. Hint!You can determine this by using the phylogenetic trees in your textbook.Starting on page 699 there is a phylogenetic tree with some of the traits.More mini-phylogenetic trees can be found on subsequent pages (702, 704, 705, etc and ending on page 880) (20 points)

4) Provide the evolutionary advantage of each trait. (20 points)

  • Amniotic eggs
  • Bilateral symmetry
  • Closed circulatory system
  • Coelom
  • Deuterostome
  • Dorsal tubular nerve cord
  • Endoskeleton
  • Endothermy
  • Exoskeleton
  • Feathers
  • Four chambered heart
  • Gills
  • Hair
  • Hollow bones
  • Jaws
  • Limbs
  • Lungs
  • Mammary glands
  • Multicellularity
  • Notochord
  • Open circulatory system
  • Jointed appendages
  • Pharyngeal pouch
  • Postanal tail
  • Psedocoelom
  • Radial symmetry
  • Scales
  • Segmentation
  • Swim bladder
  • Three chambered heart
  • Tissues
  • Two-chambered heart
  • Vertebral column

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