**   This quiz is adapted from material I received through the Bio-Chem mentor network and material posted by Joe DiBari at Troy High School.   The material does not have a copyright.   I would be happy to give credit to other specific authors if they would let me know they did this.

Relationships and Biodiversity Lab Practice Quiz

1.    State a biological explanation to account for the common characteristics shared by the 
       plant species in this lab.

2.    The following completed chromatography of Botana curus, species X, species Y, and
       species Z was analyzed by a botanist.

a.)  Which species is most closely related to BC (Botana curus)? b.)  State two reasons for your answer.

3.   Use the information in the table below to complete the evolutionary tree by writing the 
      names of the correct species in the boxes.   This information is also needed for question
      four which follows.

4.    State one characteristic that would be present in the common ancestor for these five plants.

5.    Plants and animals are becoming extinct at an alarming rate.   Scientists are concerned about
       this loss of biodiversity.

a.)  State two ways in which human practices can maintain biodiversity.
b.)  Give two reasons why biodiversity should be conserved.

6.  The letters shown below represent bases in a small part of a DNA molecule.   Write the
     sequences of bases in an RNA molecule that would be produced by DNA.   Remember that
     RNA contains U not T.

DNA Base sequence  T T C G C C

RNA Base sequence  _______________

7.  Use the genetic code chart to determine the sequence of amino acids in the protein that would
     result from the DNA molecule in question # 6.

Amino acid sequence in protein _____________________________________

Choose the response which best completes the following statements or answers the following questions.

8.    Which kind of evidence is most accurate in making decisions about relationships amongst
       the plant species?  (1.) flower/needle color (2.) leaf/needle shape  (3.) leaf pigments
       (4.) DNA fragment bands

9.    If additional data was collected for these plant species, what should be used to provide the
       best evidence for relationships between the plant species?   (1.) needle/flower shape
       (2.) distribution of stem vascular tissue  (3.) other chemical indicators
       (4.) other DNA samples

10.    Which evidence is correctly matched with the lab technique used to collect the data?
        (1.) enzyme present -- chromatography  (2.) leaf pigments -- genetic code chart
        (3.) DNA fragments -- electrophoresis  (4.) leaf shape -- indicator

11.    To prepare the plant DNA samples of analysis, the students most likely used
        (1.) enzymes that recognized and cut DNA at specific base sequences
        (2.) indicators that chemically reacted with specific DNA base sequences
        (3.) microscopes to observe the specific DNA bases
        (4.) chromatography paper which attracts specific bases

12.   Which statement is most likely to be false?   
        (1.) Organisms with similar molecular similarities are likely to be related.
        (2.) In order for a species to survive for millions of years, it must contain diversity.
        (3.) Proteins and enzymes are produced as a result of an organisms genetic code.
        (4.) DNA always exists as the base pairs A --- G and C ---- T
 
13.  Which statement is true?  (1.) Amino acids are the building blocks of carbohydrates.
       (2.) Structural similarities provide better evidence for close relationships among organisms
       than molecular similarities.   (3.) Increased biodiversity decreases the stability of an 
       ecosystem.    (4.) Endangered species hold medicinal, agricultural. ecological, commercial and 
       aesthetic value.

14.  As the genetic variation within a species increases, its biodiversity (1.) increases 
       (2.) decreases   (3.) remains the same 

15.  Define the term biodiversity.

16.   List three activities by humans which could endanger plant species.

17.   Why is preserving Botana curus so important?

18.   List 2 reasons for not saving Botana curus from extinction.

19.   The loss of biodiversity is a huge ecological problem.
        
        a.)  list two human actions which may result in the loss of biodiversity
        b.)  list two ways the loss of biodiversity can negatively effect humans
        c.)  list one positive action humans could take to reduce the loss of biodiversity

Link to the quiz answers