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Ninth Grade (Grade 9) Ecology Questions

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Grade 9 :: Ecology by der1228
Organisms that make their own food with sunlight or chemical energy are called
  1. producers
  2. consumers
  3. decomposers
  4. scavengers
Grade 9 :: Ecology by PMISIAS
Which of the following scenarios best defines the concept of carrying capacity?
  1. The exponential growth of a fruit fly population continues to increase and will eventually double in 10 days
  2. The exponential growth of ants increases dramatically when its' competitor species is forced to move to due habitat loss
  3. The logistic growth of a giraffe population continues to decline due to the increase in number of predators
  4. The logistic growth of a bunny population has stabilized because the population has reached the largest numbers of bunnies that area can support
Grade 9 :: Ecology by mrsbateacher
In the nitrogen cycle, nitrogen is fixed by
  1. nitrogen-fixing bacteria
  2. lightning
  3. a only
  4. a and b
  5. none of the above
Grade 9 :: Ecology by PMISIAS
Which factors increase the size of a population?
  1. birthrate
  2. emigration
  3. death rate
  4. carrying capacity
Grade 9 :: Ecology by TeacherClara
The study of interactions between organisms and their environment is called:
  1. abiotic
  2. ecology
  3. sociology
  4. microbiology
  5. geology
Grade 9 :: Ecology by der1228
Herbivores eat only meat.
  1. True
  2. False
Grade 9 :: Ecology by der1228
Organisms in the lowest trophic level of an ecosystem are always
  1. herbivores
  2. carnivores
  3. heterotrophs
  4. autotrophs
Grade 9 :: Ecology by TeacherClara
Which of the following is NOT an abiotic factor:
  1. moisture
  2. air currents
  3. predators
  4. temperature
  5. light
Grade 9 :: Ecology by TeacherClara
When an organism reacts to a change in the environment, it is called
  1. a stimulus
  2. a response to stimulus
  3. growth
  4. development
  5. reproduction
Grade 9 :: Ecology by PMISIAS
The relationship that exists between moose and wolves can be best described as...
  1. symbiotic
  2. predator-prey
  3. mutualistic
  4. commensalism
Grade 9 :: Ecology by PMISIAS
All of the following are density dependent factors EXCEPT
  1. Competition
  2. Predation
  3. Commensalism
  4. Parasitism and disease
Grade 9 :: Ecology by sbeck
Biodiversity is a variety of life within an area.
  1. True
  2. False
Grade 9 :: Ecology by chowe
If fish are caught faster than they can breed, the population will
  1. decrease
  2. move to other waters
  3. remain the same
  4. increase
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