Biology 11                   Review Test                                              Name: ____________

Part 1:  Multiple Choice.  Write the letter of the correct answer in the blank at left.

1. ____ Which of the following organisms is most likely to be located at the top of the energy pyramid?
a) grass
b) grasshopper
c) snake
d) mouse
e) hawk

2. ____ In the nitrogen cycle, the transformation of gaseous nitrogen into nitrogen-containing compounds is performed primarily by
a) fungi
b) bacteria
c) green plants
d) herbivores
e) carnivores

3. ____ During the carbon cycle, which of the following carbon compounds would be utilized as an energy source by green plants?
a) calcium carbonate
b) carbonic acid
c) organic molecules
d) carbon dioxide
e) carbon monoxide

4. ____ Which of the following is true about secondary consumers in an ecosystem?
a) They eat only plants.
b) They are eaten by primary consumers.
c) They are smaller and weaker than are primary consumers.
d) They are fewer in number than are primary consumers.
e) They contain the greatest total biomass in the system.

5. ____ All of the following are density-dependent factors that limit animal populations EXCEPT
a) weather
b) predation
c) birthrate
d) food competition
e) mortality

6. ____ Some people have suggested that planting millions of trees will counteract the human addition of CO2 to the atmosphere.  In the long term, this idea could work only if:
a) biomass is produced.
b) photosynthesis occurs.
c) the trees never decompose or burn.
d) the trees are planted in the natural forest.
e) extra fertilizer is provided to the trees.

7. ______ Which kind of evidence would help most to classify an organism?
a) the organism's habitat
b) the evolutionary relationships of the organism
c) the organism's eating habits
d) the function of the organisms s body parts

8. _____.  An example of  the result of stress in a population would be:
a) decline in food supply
b) decline in offspring
c) warmer climate
d) increased reproductive rate

Part II: Definitions. Give the meaning for each of the following:







e. coli



Part III:  Complete the following with the correct word or words.

1. An example of an abiotic factor would be		 ______________

2. Organism that feeds on dead tissues and waste.          ______________

3. Organism that feeds only on other organisms that produce their own food. __________

4. Organisms that make their own food.	 ______________

5. All the possible feeding relationships that exist within an ecosystem ______________

Part IV: Short Answer.  Respond to each of the following with complete sentences.

1. a)  What is meant by the term concept map?


   b)  Draw and properly label a concept map to illustrate the interactions among
       organisms at  various levels from producer to third order consumer. 
       (Use the back of this paper.)

4. a)  Why aren't stomachs harmed by the acids necessary for digestion, or are they?   

   b)  Using a properly labelled concept map, describe the human digestive system.

   c)  An earthworm's digestive system is similar to that of more highly developed animals.       

2. a)  Draw and properly label a concept map to illustrate the carbon cycle.


   b)  Why is the carbon cycle important?

   c)  If the carbon cycle is improperly balanced, what happens?

   d)  How can this outcome be somewhat controlled?

3.  With the aid of a properly labelled diagram, describe the importance of the nitrogen 

4.  a)  How is a population of rabbits density-dependent?


    b)  List and describe four density-dependent factors.


Part V:  Topics.  Answer the following questions with the aid of a diagram or concept map.

1.  a)  Label the following diagram.    

    b)  Describe how blood travels within the heart.