WorksheetsEcology
Total questions: 20
Worksheet time: 12mins
In the wild, some alligators gets their teeth cleaned by birds. The birds gets their food from the alligators' teeth.
What type of symbiosis is this?
Mutualism
Commensalism
Parasitism
Neutralism
In an ecosystem, there are populations of moose, rabbits, grass, and pine trees. Suddenly, a fire blazes through the area, which kills all of the populations. As the months go on, new species of grass begin to take root. This attracts animals, and eventually the ecosystem is restored.
What type of ecological succession happened?
Primary succession
Secondary succession
Tertiary succession
None of the above
Marine ecosystem that connects a river with the ocean
estuary
salt marsh
mangrove swamp
coral reef
Salinity refers to
how many plants are in the water
how many organisms live in the water
how much salt in is water
What happens if a population grows past its carrying capacity?
The population keeps growing
The population starts to die off
The entire species will go extinct
The carrying capacity just increases
Which of the following is NOT a density-independent factor?
lack of food
natural disasters
seasonal changes
human activities
Which of the following is NOT an outcome of high population density?
mortality increase
competition becomes less
reduction in births
decreased resource availability
