Biology 11          		        Review Test                              NAME: __________________

Part I: Multiple Choice Put the letter of the correct answer in the blank to the left.

____ 1.  Earthworms exhibit what kind of symmetry?
a) radial
b) spherical
c) bilateral
d) asymmetry

____ 2.  Which structure  is common to ALL eukaryotic cells?
a) chloroplast 
b) mitochondrion
c) cell wall 
d) bilayer membrane
e) nucleus

____ 3.  A few months after a family of wolves is released in a national park, biologists studying the population of flying squirrels in the park record a significant decline in the flying squirrel population.  Which statement represents a hypothesis?
a) What is causing the decline of the flying squirrel population?
b) The wolves may be eating the squirrels.
c) Flying squirrel bones are found in the feces of wolves.
d) Wolves are observed watching flying squirrels with hungry eyes.
e) A paper is found in the biology library listing flying squirrels among several other rodents as a food source for wolves.

____ 4.  If a group of living cells swim away from a source of light, they are demonstrating which characteristic of living organisms?
a) Living things grow, develop, and reproduce.
b) Life is organized
c) Living things react to environmental change.
d) Life requires energy.
e) Living things adapt

____ 5.  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.

____ 6. 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

____ 7. Which of the following organisms is most likely to be located at the top of the pyramid of biomass?
a) grass
b) grasshopper
c) snake
d) mouse
e) hawk

____ 8. Which is the description of a population?
a) all of the different kinds of fish in a pond
b) all of the autotrophs in a pond
c) all of the pied-billed grebes (a type of bird) in a pond
d) all of the organisms interacting with each other in a pond
e) all the carnivores in a pond

____ 9. The ability to manufacture food occurs in:
a) plants only
b) herbivores only
c) decomposers only
d) plants and herbivores only
e) plants, herbivores, and omnivores

____ 10. Biologists conduct experiments and make observations of the natural world in order to help them:
a) prove their hypotheses are correct.
b) construct a conceptual view of the natural world.
c) discover the truth of reality
d) disprove theories based on the supernatural.

____ 11. 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.

____ 12. The total magnification of a compound microscope with a 5X eyepiece and an objective power of 10X is:
a) 15X
b) 500X
c) 50X
d) 25X

____13.  The following is NOT a characteristic unique to living organisms:
a)	need for energy
b)	need for water
c)	adaptation
d)	cellular composition

Part II - Complete each of the following with the proper word or words.

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

2. Organism that feeds only on other organisms that produce their own food. ______________ 

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

4. The site of photosynthesis in a green plant is the organelle called the ______________
5. Organisms that make their own food.______________

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

7. The calciferous glands of the earthworm are necessary because _____________________.

8. One characteristic of annelids is _____________________.

9. The anterior end of the earthworm contains the ___________.

Part III: Diagrams.  Draw and properly label the diagrams. Answer with complete sentences.

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

     b)  Explain what happens if the carbon cycle becomes unbalanced.	

     c)  With the aid of a properly labelled diagram, describe the nitrogen cycle.

    d)   Explain what happens if the nitrogen cycle becomes unbalanced.

2. a) Construct a food web to show the flow of energy in the ecosystem.  
       Use the following organisms in your web:  
       3 producers,  2 herbivores, 3 carnivores, 1 omnivore and 1 scavenger.  

   b) Which niche has the greatest biomass?  ______________

   c) What would happen to the energy flow in this ecosystem, if the entire population of herbivores 
      were wiped out?

   d) List the second order consumers in your web.  

   e) What is the chief source of energy for this web?  __________________

   f) What is the difference between a food web and food chain?  

Part IV:  Topics.  Answer the following questions with the aid of a  diagram or concept map.
1.  a)  Describe how blood travels within the heart.   
                 Make sure to refer to specific blood vessels.

    b)  Why should a person exercise regularly?


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

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

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

     d)  Are earthworms beneficial?   Why, or why not?