ECOSYSTEM INTERACTIONS

SYMBIOSIS

100

When 2 organisms live together and both benefit, this is called...

Mutualism

200

A tick is living off the blood of a dog that it is attached to. What is this type of relationship called?

Parasitism

300

In a parasitic relationship, the organism that is benefiting is also known as the...

parasite

400

When a leech is attached to the skin of a turtle, it sucks the nutrients from the turtle. This relationship is called parasitism. The leech is the parasite, and the turtle is known as the __________.

host

500

In commensalism, one organism ______________ and the other ________________.

benefits/not affected

Types of Organisms

100

Any organism that can make its own food is called a ____________.

producer

200

Any organism that has to consume other organisms for energy is called a _______________.

consumer

300

What type of consumer would an organism be that only eats small insects?

carnivore

400

Name 2 examples of omnivores.

humans, bears, raccoons, ants, mice, chickens

500

Which group of consumers relies on producers only for their energy?

Herbivores

Levels within an Ecosystem

100

All the organisms of the same species living in the same area is known as a _______________.

population

200

All the populations living in an ecosystem at the same time form a _________________.

community

300

What is the term that describes the place where biotic and abiotic factors interact to survive.

Ecosystems

400

A large region with a specific type of climate, many ecosystems and organisms that are made to survive there.

Biome

500

The largest level on Earth that contains on life?

Biosphere

FOOD WEBS & ENERGY PYRAMIDS

100

True or False:

One small change in the producers of an ecosystem can affect the entire food chain of that ecosystem.

True

200

Food webs are an example of a model that can be used to draw conclusions about the transfer of _________ in an ecosystem.

energy

300

Which part of an energy pyramid contains the largest number of organisms?

the bottom

400

Every food chain begins with a ________________.

producer

500

What type of comsumer will always be at the top of an energy pyramid?

Carnivores

RANDOM

100

What is the term that describes any species that feeds on the bodies of dead organisms and the wastes of organisms?

detritivore/scavenger

200

What percent of energy is passed up every level of the food pyramid?

10%

300

What is the main source of energy for all food chains?

The Sun

400

When two organisms both need the same resource at the same time, ______________ occurs.

competition

500

A person who studies ecosystems is called an _______________________.

Ecologist