Umuc biology 102/103 lab 6: taxonomy answer key a++ tutorial

 

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UMUC Biology 102/103

Lab 6: Taxonomy

INSTRUCTIONS:

 

·         On your own and without assistance, complete this Lab 6 Answer Sheet electronically and submit it via the Assignments Folder by the date listed in the Course Schedule (under Syllabus).

·         To conduct your laboratory exercises, use the Laboratory Manual located under Course Content. Read the introduction and the directions for each exercise/experiment carefully before completing the exercises/experiments and answering the questions.

·         Save your Lab 6 Answer Sheet in the following format:  LastName_Lab6 (e.g., Smith_Lab6).

·         You should submit your document as a Word (.doc or .docx) or Rich Text Format (.rtf) file for best compatibility.

 

Pre-Lab Questions

 

  1. Use the following classifications to determine which organism is least related out of the three. Explain your rationale.

Table 2: Classifications

 

Classification Level

American Green Tree Frog

European Fire- Bellied Toad

Eastern Newt

Domain

Eukarya

Eukarya

Eukarya

Kingdom

Animalia

Animalia

Animalia

Phylum

Chordata

Chordata

Chordata

Class

Amphibia

Amphibia

Amphibia

Order

Anura

Anura

Caudata

Family

Hylidae

Bombinatoridae

Salamandridae

Genus

Tursipops

Bombina

Notophthalmus

Species

cinerea

bombina

viridescens

             

 

 

  1. How has DNA sequencing affected the science of classifying organisms?

 

 

 

 

  1. You are on vacation and see an organism that you do not recognize. Discuss what possible steps you can take to classify it.

 

 

Exercise 1: Dichotomous Key Practice

 

Table 3: Dichotomous Key Results

Organism

Binomial Name

i

 

ii

 

iii

 

iv

 

v

 

vi

 

vii

 

viii

 

ix

 

x

 

xi

 

xii

 

xiii

 

 

 

Post-Lab Questions

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

 

 

2.    How does your answer from Question 1 relate to the Linnaean classification system?

 

 

 

Exercise 2: Classification of Organisms

Data Tables and Post-Lab Assessment

Table 2: Key Characteristics of Some Organisms

Organism

Kingdom

 

Domain

Defined Nucleus

Motile

Cell Wall

Photosynthesis

Unicellular

E. coli

 

 

 

 

Yes

 

Yes

Protozoa

 

 

Yes

Yes

 

 

Yes

Mushroom

 

 

Yes

 

Yes

 

 

Sunflower

 

 

Yes

 

Yes

Yes

 

Bear

 

 

Yes

Yes

 

 

 

 

lab006fig004

Figure 4:Exercise 2 – Classification of Organisms Flow Chart

 

 

Post-Lab Questions

 

1.    Did this series of questions correctly organize each organism? Why or why not?

 

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

 

 

3.    What questions would you have asked instead of the ones that you answered above when classifying the organisms?