Symbiotic Relationships
The Life of Animals and Their Roles
Food Chains and Webs
Competition Among Organisms
Levels of Organization
100

The relationship between a predator and prey.

A predatory relationship, known as predation.

100

The definition of a food web.

A diagram that shows how energy flows in an ecosystem. In simpler terms, it shows who eats whom.
100
The one energy source that all energy comes from.

The Sun, which supports all life and supplies all energy.

100

The definition of a biotic factor.

Living or once-living parts of an organism‘s habitat.

100

A singular, living thing.

An organism

200

The definition of mutualism.

A symbiotic relationship between two different organisms where both organisms benefit.

200

The definition of a habitat.

The natural home or environment of an animal, plant, or organism.

200

The definition of a food chain.

A simple model that shows feeding relationships within one pathway.

200

The quality and quantity of biotic and abiotic factors has a major effect on ___________.

Populations
200

The definition of a population.

Multiple living organisms of the same species.

300

A symbiotic relationship where one organism benefits, while the organism is not affected.

A commensalism relationship.

300

The definition of competition in an ecosystem.

Where organisms compete within populations or among species for resources.

300

What would happen to producers if consumers went extinct?

The producer’s population would greatly increase since there are no organisms that threaten them.

300

How often do organisms with different niches compete?

They compete less often because they do not need the same resources for survival.

300

The level of organization when 5 turtles are eaten by a boy, by the ocean.

This level of organization is an ecosystem.

400

The relationship between a mosquito and a human.

A parasitic relationship, also known as parasitism.

400

The definition of a niche.

The role an animals plays in their ecosystem.

400

The difference between a food chain and a food web.

A food chain is a SIMPLE model that shows feeding relationships within ONE pathway, while a food web is a COMPLEX model that shows feeding relationships within MULTIPLE pathways.

400

When two species share a niche, one of their populations usually _________.

Decreases

400

The level of organization of deer mating with each other.

This level of organization is a population.

500

The relationship between an Emperor shrimp and a sea cucumber.

A commensalism relationship, because the Emperor shrimp rides on the back of the sea cucumber as a way of faster transportation.Monkey

500

How can you tell if an organism is biotic or abiotic?

You can tell if the organism is biotic if it shows characteristics of life like DNA, reproduction, growth, and other features.
500

The energy role that feeds on secondary consumers.

A tertiary consumer feeds on secondary consumers, which are usually carnivores.

500

___________ is a struggle between organisms to survive as they attempt to use the same limited resources in the same place at the same time.

Competition

500

The level of organization when 6 squirrels climb up a 500-year-old oak tree.

This level of organization is a community, since the oak tree is a living organism, along with the squirrels.