Taxonomy

Dichotomous Key Practice

Table 3: Dichotomous Key Results

(4 points for each “binomial name” cell for a total of 52 points)

OrganismBinomial Name
i
ii
iii
iv
v
vi
vii
viii
ix
x
xi
xii
xiii

1. What do you notice about the options of each step as they go from number one up? (3 points)

2. How does your answer from Question 1 relate to the Linnean classification system? (3 points)

Experiment 2: Classification of Organisms (42 points)

Table 2: Key Characteristics of Some Organisms

(each cell worth 3 points for a total of 27 points)

OrganismKingdomDomainDefined NucleusMobileCell WallPhotosynthesisUnicellular
E. coliYesYes
ProtozoaYesYesYes
MushroomYesYes
SunflowerYesYesYes
BearYesYes

Refer to Table 2 above and to Figure 4 in the lab manual to answer the following questions:

1. Did this series of questions correctly organize each organism? Why or why not? (each part of question worth 3 points for a total of 6 points)

2. What additional questions would you ask to further categorize the items within the kingdoms (Hint: think about other organisms in the kingdom and what makes them different than the examples used here)? (4.5 points)

3. What questions would you have asked instead of the ones that you answered about when classifying the organisms? (4.5 points)

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