LS5 T5L1 - Living Things and the Environment

Starfish are probably the most important predator in the shallow ecosystem because they eat basically anything that they can come across. Their feeding activities control the whole ecosystem. This is an example of the starfish ___.

• habitat
• biotic factors
• tolerance level
• niche

What is the name of an animal that is hunted and eaten by other animals?

• producer
• prey
• predator
• decomposer

What level of ecological organization would include all squirrels that live in the same area?

• biome

• community

• ecosystem

• population

All the different populations that live together in an area make up a(n)

• community.
• ecosystem.
• organism.
• species.

What are limiting factors?

• The maximum number of organisms an area can sustain

• Scarce resources that limit the size of a population

• Conditions that limit how much energy flows to the next trophic level

• How diverse the populations of a community are

What does carrying capacity mean?

• The amount of abiotic factors present in the environment

• The total number of species living in an ecosystem

• The number of offspring one mother can have in a year

• The number of organisms an ecosystem can sustain

A herd of zebras would be considered a

• community
• species
• ecosystem
• population

Which of the following encompasses all the others?

• ecosystem
• community
• population
• individual

Competition in a population _________ when population density _________.

• increases, increases

• increases, decreases

• decreases, decreases

• decreases, increases

What will happen if all of the frogs in a population die?

• The frogs' predators will decrease and the frogs' prey will increase

• The frogs' predators will increase and the frogs' prey will decrease

• We better all pray because there isn't anymore frogs.