Ecosystems Study Guide Chapter 7 Ecosystems Study Guide

Why do members of the same species have different adaptations? They adapt to their changing conditions in their environments.

When do adaptations occur? When survival characteristics are passed from one generation to another.

It would have a hard time surviving. What happens to a species that cannot adapt to changing conditions in the environment? It would have a hard time surviving.

Producers Producers such as plants create their own energy from the sun.

Consumers Animals and other organisms get their energy from eating plants or organisms who eat plants.

How is a food chain related to a food web? Food chain makes up the food web.

What is a parasite? An organism that harms another in a symbiotic relationship.

What is a food web? It shows how food chains in an ecosystem are connected. http://magma.nationalgeographic.com/ngexplorer/0309/quickflicks/index.html

Why does the amount of available energy decrease at higher levels of an energy pyramid? Some energy is used by organisms at each level for their own life processes.

They will compete for available resources. When different species with similar needs live in an ecosystem with limited resources, what will happen? They will compete for available resources.

Symbiosis Is a close, long-term relationship between organism that benefits at least on the organisms.

Parasitism Is an organism that benefits from its host.

Mutualism Both organism benefit.

Commensalism Helps one organism but neither help nor harms the other.

In the nitrogen cycle, where do animals get the nitrogen they need? From plants

Structures— Behaviors— Body processes-- Describe the three different types of adaptations and give an example of each. Structures— Behaviors— Body processes--

Using a T chart, compare how consumers and producers use energy. __________________________________

Draw a picture and label the parts of a water cycle.