#1
Which organism is typically found at the top of a food chain?
#2
What do primary consumers eat?
#3
Which of the following is an example of a biotic factor in an ecosystem?
#4
Which of the following is an example of a secondary consumer?
#5
What is the term for a group of organisms of the same species living in the same area?
#6
Which of the following is an example of an abiotic factor in an ecosystem?
#7
What is the term for the variety of different species within an ecosystem?
#8
What is the term for the process by which oxygen is produced and carbon dioxide is consumed by photosynthetic organisms?
#9
Which of the following best describes a decomposer in a food chain?
#10
What is the main source of energy for most ecosystems?
#11
What is the term for the process by which water vapor is released from plants into the atmosphere?
#12
What is the primary role of bacteria in a food chain?
#13
What is the main function of a trophic level in a food chain?
#14
Which of the following is an example of a detritivore?
#15
What is the term for the process by which carbon is cycled between living organisms and the environment?
#16
What is the term for the relationship in which one organism benefits while the other is neither helped nor harmed?
#17
What is the term for the process by which nitrogen is converted into forms that can be used by plants?
#18
What is the primary source of energy for deep-sea ecosystems?
#19
Which of the following is a characteristic of a pioneer species?
#20
In a food chain, what happens to energy as it moves from one trophic level to the next?
#21
Which of the following best describes a keystone species?
#22
Which of the following factors is NOT considered a density-dependent limiting factor on population growth?
#23
Which of the following is an example of a top-down control on an ecosystem?
#24
What is the term for the process by which phosphorus is released from rocks and minerals into the soil?
#25