Ecosystem

What is a community?

• A habitat with abiotic factors

• A very small habitat

• All the abiotic factors in a specific area

• All the different populations that live together in an area

The place where an animal lives and gets what it needs to

survive is called_______.

• A community

• A Habitat

• An environment

• A niche

The first organism in a food chain is always a__________.

• consumer

• producer

• carnivore

• herbivore

An ecosystem thrives with biotic and abiotic components. An example of an abiotic part of an ecosystem is ______________.

• Bacteria

• Fungus

• Water

• Decaying plants

Water, soil, minerals, nitrogen and energy are all essential ______ components of an ecosystem.

• abiotic

• Materials

• Biotic

• Environmental

A lion hunts and eats an antelope. In this case, the lion is the:

• Prey

• Parasite

• Consumer

• Producer

A species of rabbit lives in a meadow where grass plants are readily available during summer months. The rabbits do not stray far from the meadow because the plants supply food and protection from predators. One summer, a fire destroys the plants in the meadow. As a result of the absence of plants in the meadow, the rabbit population will probably...

• decrease in size

• increase in size

• increase reproduction

• switch to a different type of food

The transfer of energy from one organism to the next in an ecosystem begins with a producer. A producer is an organism that produces its own food. A consumer is an organism in a food chain that obtains energy from producers or other consumers; consumers may be herbivores or carnivores.

Which food chain correctly describes the flow of energy in an ecosystem?

• grass → grasshopper → fish → human

• grasshopper → fish → human

• human → fish → grasshopper

• human → grasshopper → fish → grass

What happens to the amount of available energy in the pyramid as it moves up through the different levels?

• it increases

• it decreases

• it remains the same

• it decreases, then increases

An organism that lives by breaking apart dead organic matter into simpler parts is...

• scavenger
• consumer
• decomposer
• carnivore