30 Jun Biology Lab
Question Description
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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