Unit 11-EcologyUnit 11-EcologyChapter 16 & 17 in your Holt Biology textbook

Ecology - Study of interactions between organisms and environment

Population – same species, living together

Community – several populations, living together

Ecosystem - abiotic & biotic components of an area

Biotic factors – all of the living things in a habitat

Abiotic factors – all of the non-living things

in a habitat◦Soil◦Water◦Weather

Habitat – where a population lives

Niche – function of a species in its community (its job)

What are 4 things must all habitats provide?

Come up with 4 on your ownThen pair up with someone near you and compare your answers

Energy in an Energy in an EcosystemEcosystemProducers – plants; produce

energy by photosynthesis

Consumers – eat to obtain energy

The ConsumersThe Consumers•Herbivores-

•Carnivores –

•Omnivores –

•Detritivores–

•Decomposers –

eat plants

eat plants and animals

feed on dead plants and animals (vultures*, worms, bacteria, fungi)

breaks down organic matter from dead organisms (bacteria and fungi)

Consumer MapConsumer MapCreate a tree map in your journalUnder each type of consumer list

each characteristic they have

___________

___________

______________________

___________

T. Trimpe 2008 http://sciencespot.net/

Challenge #1Habitats

1. What do we call the place where an organism lives?

2. What four things does a good habitat provide?

3. What are two biotic factors in the habitat of a field mouse?

4. Why do you find different kinds of organisms in different habitats?

Answer each question.

1. What do we call the place where an organism lives?

2. What four things does a good habitat provide?

3. What are two biotic factors in the habitat of a field mouse?

4. Why do you find different kinds of organisms in different habitats?

The answers are …

Habitat

Food, water, shelter, and space

Grass or other plants, insects, snakes, gophers, hawks, owls

Different organisms need different things to survive. Some organisms can survive in a desert, but others cannot.

T. Trimpe 2008 http://sciencespot.net/

Challenge #2Levels of Organization

1. What term refers to all the members of one species in a particular area?

2. What do we call all the different populations that live in an area?

3. What term refers to all the living and nonliving things that interact in an area?

4. Organize these terms from the smallest to the largest.

Community, Organism, Ecosystem, Population

5. What do we call a scientist who studies how living things interact with each other and their environment?

Answer each question.

1. What term refers to all the members of one species in a particular area?

2. What do we call all the different populations that live in an area?

3. What term refers to all the living and nonliving things that interact in an area?

4. Organize these terms from the smallest to the largest.

Community, Organism, Ecosystem, Population

5. What do we call a scientist who studies how living things interact with each other and their environment?

The answers are …

Population

Community

Ecosystem

Organism Population Community Ecosystem

Ecologist