Ecosystems Study Guide

Which statement is true about food chains?

An animal that eats both plants and animals.

People don't eat grasses, but grasses are still important to people. In a food chain why are grasses important to people

The straight path in which energy is passed. from the sun to producer to consumer is called a

In which kind of habitat would animals need to compete for shelter the most?

An animal that only eats plants for food.

Which food chain is correct?

As more people have moved to the beach, the sea turtle population has decreased. What most likely caused this decrease?

Which pair of organisms compete for the same resources in an ecosystem?

In a grassland ecosystem, if the population of eagles decreased what will be the effect on the ecosystem?

Many food chains linked together are called a

Why do different organisms live in different types of water?

Why is there more plant life in shallow waters than deep waters?

Name the two producers in the food web

According to the food web, which of the following is a carnivore?

An organism that breaks down dead and decaying matter?

Organisms that cannot make their own food and get energy from other organisms are called

Why are decomposers necessary in a food chain?

A behavior or body part that helps living things to survive is called

Organisms that make their own food for energy are called

What would happen to a food chain if the producer was taken out? grass→mouse→snake→hawk

Which organism is a producer?

The direction an arrow faces in a food chain points to who is

Which of the following is a producer?

The nonliving parts of an ecosystem are called

Which aquatic ecosystem is a mixture of salt and freshwater?

How can the wolf benefit from plants, even if it never eats plants? grass→rabbit→wolf

Which will most likely cause a decrease in predator populations?

Which is most responsible for recycling dead plants and animals in an ecosystem?

If a population of grizzly bears gradually increases over time, which will most likely occur?

Which animal in the food web is both predator and prey?

How would the woodpecker population in a forest area likely be affected if a housing development is built in that area?

Why do different temperatures exist at different levels of oceans and lakes?

Which of the following could not be a part of the food chain?

When can two populations that eat the same food survive in the same habitat?

An example of a decomposer would be a

The living parts of an ecosystem are called

The living and nonliving factors in an environment and all their interactions is called

What is the original source of energy in a food chain?