Ecology/Ecosystems

What would most likely happen if airborne pollution blocked the sun’s rays so significantly that only 5% of plants survived?

• The atmosphere would fill with oxygen, and animals would begin to die.

• All animals would evolve to begin using carbon dioxide as a food source.

• The atmosphere would fill with carbon dioxide, and animals would begin to die

• All animals would evolve to use a mixture of oxygen and carbon dioxide during respiration.

In an enclosed glass jar (terrarium) that has plants, water, sunlight, water, soil/decomposers; What must happen for the carbon cycle to continue in this terrarium?

• All organisms must continue to exchange gases

• The snails must double their production of carbon dioxide.

• The plant must produce carbon dioxide at a faster rate

• The decomposers must begin to produce oxygen.

if consumers increase, the amount of producers decrease. What else will INCREASE?

• carrying capacity

• competition

• resources

• diversity

if resources like space, food, water become limited--> what will the population reach at some point? choose the BEST option

• emigration limit

• immigration limit

• carrying capacity

• competition limit

stomata in plant leaves

• exchange oxygen and carbon dioxide gases

• main part of plant where photosynthesis occurs

• main job is absorbing water through the leaves

• main job is protecting the plant from harm

relationship between a flower and the insect

• competition

• predation

• mutualism

• parasitism

if I kill the prey species but not predators. What is the long-term effect of on predators?

• increase in population size

• decrease in population size

In the energy pyramid here, how much of the energy in the producers gets passed to the herbivores? (the rest is lost as heat or through that organism using it to live)

• 10%

• 20%

• 80%

• 90%

When a population grows past its carrying capacity, what happens to the population size? It will _______________.

• Increase

• Decrease

• Stay the same

• Go extinct

The number of organisms an ecosystem can support without environmental degradation is called ____________________.

• Carrying capacity

• Limiting factors

• Population density

• Simulations