Ecology Review

Which one of these is considered an individual

• A group of crows

• An octopus

• A rock

• Birds drinking water

Which of these is a population?

• A group of geese

• A sunflower

• A pile of boulders

• A fox eating a rabbit

What is a community?

• One single organism of a single species

• A group of organisms of a single species

• All the different organisms from all species

• a rock

What happens to predator populations when the prey decrease?

• There are more predators

• There are the same predators

• There are less predators

• Prey can never decrease

What happens to prey populations when the predator decreases?

• The prey population goes up

• The prey population stays the same

• The prey population goes down

• Predators can never be decreased

The plant population experiences a drought (no water), what happens to the rest of the animals?

• Prey Up, Predator Up

• Prey down, Predator Down

• Prey down, Predator Up

• Prey Up, Predator down

What is carrying capacity?

• The total population of a species in an ecosystem

• The maximum population size an ecosystem can support

• The number of predators in an ecosystem

• The number of prey in an ecosystem

Which of the following factors can increase the carrying capacity of an ecosystem?

• Competition for resources

• Disease outbreaks

• Decreased availability of food

• Increased availability of resources

In a forest ecosystem, if the primary producers (plants) experience a high growth, how might this affect the carrying capacity for herbivores in that ecosystem

• Increase it

• Decrease it

• Have no effect

• Cause extinction of herbivores

What happens to a population when it exceeds the carrying capacity of its ecosystem?

• The population stabilizes

• The ecosystem adapts to support the excess population

• The population crashes

• The population remains constant