Unit 6 Test Study Guide - Ecology

What happens when two species try to occupy the same niche?

• competition
• competitive exclusion
• resource partitioning
• extinction
• all answers can be true

What process is being shown below?

• primary succession
• secondary succession
• eutrophication
• predation

What human-made material is usually involved with this process?

• fertilizer
• pesticides
• antibiotics
• rainwater

Where does energy for a food chain/food web come from?

• sun
• plants
• herbivores
• laws of thermodynamics

Which level of the energy pyramid shown contains the greatest amount of energy?

• Level 1
• Level 2
• Level 3
• Level 4

Why do the tiers of the energy pyramid get smaller as you move up?

• Smaller organisms are found in the higher trophic levels
• There are more carnivores than herbivores in ecosystems
• Primary consumers make less energy than quaternary consumers
• Energy is lost as it moves from one trophic level to the next

If the mice have a total of 250 J of energy, how much would be found in the primary consumer level of this food pyramid?

• 25 J
• 250 J
• 2500 J
• There is no way to know

What type of population growth did this graph represent in years 0-2?

• Logistic growth
• Carrying capacity growth
• Exponential growth
• Limiting factor growth

Which portion of the graph below represents the carrying capacity of this population?

• A
• B
• C
• D
• E

Which letter represents a population that has an abundant food supply and relatively few predators?

• A
• B
• C
• D
• E