Ecosystems: Communities and Populations

Ecosystems: Communities and Populations

By Donna Hart

Ecosystems

We will learn all about how organisms interact in the place where they live!

Ecosystem

• A community of organisms and their environment

Population

• A group of organisms of the same species that live in a specific area.

Community

• All the populations of species that live in the same area and interact with each other.

• Interact: affect each other

organism

An organism is a living thing - a plant, animal, cell - biotic factor

Multiple Choice

An ecosystem is made up of:

• living things
• nonliving things
• living and nonliving things

Multiple Choice

Living things in an ecosystem are called

• biotic
• abiotic
• consumers
• decomposers

Multiple Choice

This picture is an example of what kind of ecosystem?

• Grasslands
• Desert
• Tundra
• Forest

Multiple Choice

This picture is an example of what kind of ecosystem?

• Desert 
• Grassland
• Tropical Rain Forest
• Tundra

Multiple Choice

This picture is an example of what kind of ecosystem?

• Forest 
• Tundra
• Desert
• Desert

Multiple Choice

The different populations that interact with each other in the same area form?

• population
• community
• niche

Multiple Choice

a fish

• bitoic
• abiotic

Multiple Choice

trees

• biotic
• abiotic

Multiple Choice

air

• biotic
• abiotic

Multiple Choice

All organisms in a community

• Niche

• Community

• Population

Multiple Choice

All populations living in an area

• Community

• Population

• Niche

Multiple Choice

The role of organisms in a community

• Population

• Ecosystem

• Niche

Multiple Choice

All the living things in an ecosystem make up a ________.

• ecosystem

• environment

• population

• community

Multiple Choice

A ________ is all the members of one kind of plant or animal in a community.

• ecosystem

• environment

• population

• community

Multiple Choice

Population

• A group of populations living and interacting with each other in an area.

• A group of organisms of the same species who live in the same area at the same time.

• The struggle between organisms to survive in a habitat with limited resources.

Multiple Choice

A squirrels niche would be _________________.

Think about a squirrel and what would it would do!

• hunting prey and providing meat for other squirrels.

• searching for fish to eat in the ocean.

• staying busy storing nuts and seeds for winter.

• help decompose other animals and plants.

An organism's niche includes:

• What and When it eats

• When it's active

• What it uses for shelter

• How it Reproduces