Name: 
 

Gateway Practice 7



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

1. 

The size of a population in the environment could be limited by:
a.
The food supply
b.
The oxygen supply
c.
The temperature
d.
Diseases and number of predators
e.
All of the above.
 

2. 

In a community, the plant and animal populations are gradually replaced by new plant and animal populations. This process is
a.
succession
b.
commensalism
c.
symbiosis
d.
competition
 

3. 

Which are NOT fossil fuels?
a.
nuclear energy
b.
petroleum
c.
coal
d.
natural gas
 

4. 

A biodegradable substance
a.
is a hazardous chemical waste.
b.
destroys the environment.
c.
can be decomposed into substances that do not harm the environment.
d.
Both a and b.
 

Completion
Complete each sentence or statement.
 

5. 

In a desert, the sagebrush species has a special role, or ____________________ in the environment.
 

 

6. 

There is a maximum number of moles that can be supported by a particular habitat. This number is the habitat's ______________________.
 

 

7. 

A population of beetles has a place where the beetles live within the forest ecosystem. This place is their _______________.
 

 

8. 

The part of the biosphere that surrounds a seahorse is the animal's _____________.
 

 

9. 

All the organisms living together in a forest pond are the pond's __________________.
 

 

10. 

All the prairie dogs that are living in a grassland community are known as the prairie dog ________________________.
 

 

11. 

Lichen is made up of fungi and algae. Both organisms benefit each other. The fungi provide shelter and a moist environment for the algae. The algae make food for the fungi. This relationship is ______________________.
 

 

12. 

A tapeworm lives inside an animal. The tapeworm gets water, oxygen, and food from the animal, but is harmful to its host. The animal gets no benefit from the relationship. This relatioonship is ______________________.
 

 

13. 

The remora fish attaches itself to a shark. The remora travels around with the shark, eating leftover scraps of food. The remora does not help or harm the shark. This relationship is ______________________.
 

 

14. 

A fungus on a log helps the log decay. The fungus is a ____________________.
 

 

15. 

A vulture feeds on a dead skunk. The vulture is a ______________________.
 

 

16. 

Directions: Use the picture below to answer questions 12 and 13.
gateway_practice_7_files/i0180000.jpg
Which organisms above are producers?
 

 

17. 

Which organisms above are consumers?
 

 

18. 

Directions: Use the picture below to answer questions 14 through 17.
gateway_practice_7_files/i0200000.jpg
Which organisms in the food chain are producers?
 

 

19. 

Which are consumers?
 

 

20. 

Which are primary consumers?
 

 

21. 

Which are secondary consumers?
 

 

Short Answer
 

22. 

Directions: Use the diagram below to answer questions 1 through 3.
gateway_practice_7_files/i0250000.jpg
If the flower color is determined by the rules of Mendelian genetics, what is the phenotype of the offspring in the Fgateway_practice_7_files/i0250001.jpg generation?
 

23. 

In the Fgateway_practice_7_files/i0260000.jpg generation, what percentage of the offspring have purple flowers?
 

24. 

In the Fgateway_practice_7_files/i0270000.jpg generation, what percentage of the offspring have white flowers?
 

25. 

What is the name of the broadest classification level?
 

26. 

Identify one characteristic used to place (or classify) organisms into kingdoms.
 

27. 

The graph below shows the relative rates of action of a specific enzyme at different temperatures.
gateway_practice_7_files/i0300000.jpg
What happens to the rate of action of this enzyme as the temperature increases from 30gateway_practice_7_files/i0300001.jpgC to 50gateway_practice_7_files/i0300002.jpgC?
 

28. 

Predict what would occur at temperatures below 0gateway_practice_7_files/i0310000.jpgC.
 

29. 

Directions: Use the chart to answer questions 8 through 10.
gateway_practice_7_files/i0320000.jpg
To which class of chordates does animal C belong?
 

30. 

What characteristic tells you that animal A is a mammal?
 

31. 

Which characteristic is NOT common to all mammals?
 

32. 

Directions: Use the following diagram to answer questions 11 through 14.
gateway_practice_7_files/i0350000.jpg
What is structure "A" called?
 

33. 

What is structure "B" called?
 

34. 

What is structure "C" called?
 

35. 

What is structure "D" called?
 

36. 

In which biome would these features ( Foxes; Squirrels; Bears; Oak Trees; Woodpeckers) be found?
.
 

37. 

In which biome would these features be (Crayfish, Trout, Marshes, Snakes, Alligators) found?
 

38. 

In which biome would these features  (Irregular precipitation, Grasses, Antelopes, Gazelles, Prairie dogs) be found?
 

39. 

Which biomes is pictured below?
gateway_practice_7_files/i0420000.jpg
 



 
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