Subject: Biology    / General Biology

1. Which of the following is part of the abiotic environment of an organism? (Points: 5)





2. Decomposers: (Points: 5)

are unimportant links in a food web.

recycle organic to inorganic compounds.

cause disease and destruction.

require a source of light energy.

3. Most of the processes that influence the hydrologic cycle are: (Points: 5)

biological processes.

physical processes.

ecosystem processes.

wind processes.

4. In the carbon cycle, the two primary processes that remove and add carbon dioxide to the atmosphere are: (Points: 5)

predation and parasitism.

carnivores and herbivores.

sunlight and photosynthesis.

respiration and photosynthesis.

5. __________ convert nitrogen gas to nitrogen that plants can use. (Points: 5)


Nitrogen-fixing bacteria

Nitrifying bacteria

Denitrifying bacteria

6. What an animal uses for food is part of its: (Points: 5)




None of these answers is correct.

7. Species A and species B both benefit by living together. This is an example of: (Points: 5)





8. The biome with the fewest seasonal changes is the: (Points: 5)

temperate deciduous forest.


tropical rain forest.

boreal coniferous forest.

9. If a forest fire destroys a region of the forest, then a: (Points: 5)

secondary succession will occur.

primary succession will occur.

climax community is present in the burned area.

None of these answers is correct.

10. If an animal cannot digest a chemical but is able to pass out all of that chemical as waste material, there is: (Points: 5)



no parasitism.

no biomagnification.

11. Gene flow is: (Points: 5)

used for comparison purposes when numbers of organisms or size of organisms would lead to confusion.

the optimum number of individuals of a species that can survive.

the movement of genes within a population from place to place resulting from migration.

the graphic expression of increasing or decreasing numbers.

12. A population does not change in size during the __________ phase. (Points: 5)



stable equilibrium

None of these answers is correct.

13. When a limiting factor becomes more important as the size of the population increases, it is known as: (Points: 5)

a biotic potential.

a density-independent factor.

a density-dependent factor.

an intrinsic factor.

14. The carrying capacity of an area for a plant is most likely maintained by: (Points: 5)

the accumulation of waste products.

the availability of raw material and energy.

a constant birthrate.

a low biotic potential.

15. The carrying capacity of an area can be reduced if there is too much: (Points: 5)


raw material.


All of these answers are true.

16. Instinct differs from learned behavior in that instinctive behavior: (Points: 5)

does not change; learned behavior does.

is acquired; learned behavior is genetic.

is adaptive; learned behavior is not.

All of these answers are true.

17. Insight learning will help: (Points: 5)

a wolf learn imprinting.

protect an insect from being eaten by a bird.

teach a bird how to fly.

a student select the correct answers on an exam.

18. Territorial behavior always involves: (Points: 5)

communication between members of the same species.

huge investments in time and energy.

courtship behavior.

All of these answers are true.

19. __________ is a method of ranking individuals from highest to lowest. (Points: 5)


Territorial behavior analysis

A dominance hierarchy


20. Behavior in which an individual animal gives up an advantage or puts itself in danger to aids others is called: (Points: 5)


altruistic behavior.

observational learning.


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