Invasive species

Biodiversity refers to

• extinct species
• the variety of species on Earth
• nonrenewable resources
• the rate of species decline

When taken to a new habitat, non-native plants often threaten native plants of the new habitat.  Why do they do this?

• Non-native plants are able to mutate rapidly
• Non-native  plants cause native animals to relocate
• Non-native plants are able to be used for medicine
• Non-native plants compete with native plants for resources

What effect will an invasive species have on the carrying capacity of an ecosystem?

• The carrying capacity will increase
• The carrying capacity for everyone will decrease
• The carrying capacity will only decrease for those in competition for same resource
• The carrying capacity for all animals will stay the same

A population of an organism will only grow exponentially if:

• The resources are unlimited
• They want to
• The resources are limited
• They do not like to compete

Kudzu has overgrown many parts of southern Missouri and native ground plants have disappeared from the area. This is an example of:

• Parasitism between kudzu and the native plants
• A predator prey relationship between ground plants and kudzu
• Competition occurring between the native and invasive species
• Commesalism occurring between the kudzo and native plants

Why do the populations of invasive species grow so quickly?

• Invasive Species are native to an area.

• Invasive species are prey to many animals.

• Invasive species have no natural predators.

• Invasive species keep the ecosystems in equilibrium.

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 a density-dependent factor that would affect the carrying capacity of a population?

• Soil

• Predator

• Rainfall

• Sunlight

Which statement best describes the predator-prey relationship displayed on this graph?

• There is no relationship between the predator and prey.

• When the prey population increases, the predator population decreases.

• When the prey population increases, the predator population increases.

• when the predator population increases, the prey population increases.