Ecology Review

Front

Which of the following parts of an ecosystem are biotic? Options: Plants, Water, Air, Light

Back

Plants

Front

What type of ongoing relationship is it when birds eat food from between the teeth of alligators, leaving the alligators with clean teeth and the birds with a meal?

Back

Mutualism

Front

Which of the following have a predator and prey relationship? Options: Clownfish and sea anemone, Mushroom and a log, A deer and a rabbit, Spider and a fly

Back

Spider and a fly

Front

Some limiting factors that affect the size of populations include lack of food, lack of water, lack of living space, and the spread of disease.

Back

True

Front

If there are not enough predators and too many prey, the prey population may eventually starve.

Back

True

Front

Which situation would BEST allow the long-term survival of a native rabbit population in an ecosystem?

• New producer species immigrates to the ecosystem and decreases the diversity of producers.
• The population size of the rabbit's predators and the grasses they eat remain constant.
• Humans in the ecosystem reduce the number of predators in the area.
• A new herbivore that feeds on the same plants as the rabbit moves into the ecosystem.

Back

The population size of the rabbit's predators and the grasses they eat remain constant.

Front

Look at this food web. What would most likely happen if the population of rabbits decreased?

Back

The plant population would increase

Front

Based on the food web shown above, what is most likely responsible for the rabbit population trend as shown in the graph? Options: increase in amount of grass, decrease in amount of grass, overpopulation in squirrel population, decrease in hawk population.

Back

decrease in amount of grass

Front

What starts to happen in 1865 regarding the populations of rabbits and lynx?

Back

The lynx population starts to decrease

Front

Look at this graph of the populations of rabbits (prey) and lynx (predator). Lynx is small wild cat that eats rabbits. The populations go up and down. After a time of decreasing, which population starts to increase first? Options: Lynx, Rabbit, There is not enough information to answer this question

Back

Rabbit