Community Ecology Ch. 3 L. 1

Community Ecology Ch. 3 L. 1

You will work through this lesson at your own pace. Do not forget to take notes in your science binder and write down your vocabulary definitions along the way!

Multiple Choice

A collection of organisms that belong to different populations but all live in the same area and interact with one another.

• Population

• Community

• Ecosystem

• Ecosphere

Multiple Select

Along with organisms living together in the same place at the same time, a community would also include plants, other animals, bacteria and fungi that the organisms encounter.

• True

• False

Multiple Select

ALL communities are identical.

• True

• False

Open Ended

How might abiotic factors affect a community?

Multiple Select

The nonliving aspects of an ecosystem.

• Biotic

• Abiotic

Multiple Select

The living aspects of an ecosystem.

• Biotic

• Abiotic

Multiple Select

What are the Abiotic factors in this image?

• water

• plants

• birds

• dirt

• sunlight

Multiple Select

What are the Biotic factors in this image?

• Plants

• Worms

• Sunlight

• Water

• Fish

Multiple Choice

The wolf goes extinct, and the deer population has no predator to worry about. They graze the land. Because there is no more food. Some of the deer begin to bite at each other, while others die of starvation. What is the limiting factor to the deep population?

• Competition

• overcrowding

• predator-prey relationship

• Herbivory Effect

Multiple Choice

The wolf population gets reintroduced to the ecosystem. There is enough deer to go around, so they eat comfortably. The wolf population begins to grow out of control with so much food. The different wolf families then begin to compete for the few caves that exist. Not everyone has good shelter so some have to sleep in the forest floors. What is the limiting factor to the wolves?

• Overcrowding

• Competition

• Weather

• Shelter

Open Ended

What is the range of tolerance of the trout? What happens if the temperature of the water goes below or above that range of tolerance?

Multiple Choice

The varying conditions of one environmental factor in which an organism can survive

• biotic factors

• controlled environment

• abiotic factors

• chlorophyll

• range of tolerance

Multiple Select

The range of tolerance of an organism is used to define it aggressiveness in conflicts.

• True

• False

Multiple Select

What is the distinction between a zone of tolerance and a limiting factor?

• They define the same idea

• The Range of tolerances are biotic or abioitc things that limit growth, limiting factors defines the factors in which an organism can survive.

• Limiting factors are biotic or abioitc things that limit growth, range of tolerance defines the factors in which an organism can survive.

• Both refer to the growth of species populations, limiting factors are only biotic factors, range of tolerance defines abiotic factors

Multiple Select

Lichens make good pioneer species because they secrete acid that breaks down rock.

• True

• False

Multiple Choice

Primary succession is the most rapid form of succession because soil is already present.

• True

• False

Multiple Choice

What is a common characteristic among pioneer species?

• roots that break apart rocks

• exposed surface roots

• long thick roots

• soak up water quickly

Multiple Choice

Which of the following best describes primary succession?

• Volcano wipes out ecosystem that gradually grows back from ash covered soil

• Forest fire burns down forest that must bounce back over time

• Volcano creates a new island of rock that must break down to form an ecosystem

• Tornado destroys a crop that must slowly grow back over time.

Multiple Choice

Which progression best explains secondary succession?

• lichens>grass>shrubs>small trees> big trees

• Volcano destroys ecosystem>grasses>shrubs>small trees>big trees

• mosses>creates soil>grasses>small trees> big trees

• Volcano forms new island> lichens>grasses>shrubs>small trees>big trees

Multiple Choice

Both primary and secondary succession start with...

• modify an area to allow more complex organisms to appear

• never reach climax community

• lichens and moss

• start from a volcano always

Multiple Choice

How do pioneer species compare in primary and secondary succession?

• primary starts with grass and weeds, secondary starts with mosses

• primary starts with a volcano, secondary starts with a forest fire

• primary starts with forest fire, secondary starts with volcano

• Lichens and moss in primary, and grasses/ ferns in secondary

Open Ended

What best describes the term succession?

Multiple Choice

Mosses and lichens are the first organisms to appear during which ecological stage of an ecosystem?

• Primary succession

• Secondary succession

• Climax community

• End succession

Fill in the Blank

A group of interacting populations that occupy the same area at the same time is a ____________________.

Open Ended

What is a limiting factor?

Open Ended

What is the difference between primary and secondary succession?

Open Ended

Give an example of a limiting abiotic factor.