Unit 4 Test Review

Food Web and Energy Pyramids

Review

Unit 4 Test Review

Producer

Also known as an autotroph.

Makes its own food.

Photosynthesis

Process plants/producers/autotrophs use to make food.

Multiple Choice

Which of these is an autotroph?

On a response card write why you chose your answer.

Consumers

Anything that consumes or eats food to get energy.

Also known as a heterotroph.

Heterotrophs

All animals are heterotrophs.

Multiple Choice

Turn and Talk

What is another word for a consumer?

• heterotoph

• plant

• producer

• autotroph

Decomposers

Eat dead stuff

Will eat dead plants or animals

Fungus and bacteria are the main examples.

Categorize

Options (11)

LILY PAD

SUNFLOWER

TREE

GRASS

HUMAN

COW

BIRD

FISH

MUSHROOM

no answer

BACTERIA

Organize these options into the right categories

AUTOTROPH

HETEROTROPH

DECOMPOSER

no answer

Food web

Show more interactions than in a food chain.

Usually leaves out decomposers cause things can get messy.

Energy in a food web

How much energy a consumer gets depends on which organism they are eating.

If they are eating primary consumer, they are getting more energy from that trophic level than if they ate something that was a secondary consumer.

Multiple Choice

Why is it better to have more biodiversity in an ecosystem?

• because biodiversity can help make ecosystems more sustainable

• because biodiversity provides more energy

• because biodiversity provides less energy

• because it gives us more animals for the zoo

Multiple Choice

What does the arrow actually represent in a food web or food chain?

• Who is being eaten

• Who is eating

• The flow of energy

• the direction of food

Trophic levels

Only 10% of the energy of each trophic level actually makes it to the next level.

The other 90% is lost as heat to the environment.

Energy pyramid

Shows two things.

It compares the population of each trophic (energy) level and shows the amount of energy in each trophic level.

Multiple Choice

Which of the following vocabulary words can be used to describe the frog in this food chain?

• secondary consumer, heterotroph

• heterotroph, tertiary consumer

• autotroph, secondary consumer

• decomposer, heterotroph

An ecosystem is a large, biological community of organisms, both living and non-living, interacting with one

another and their physical environment to sustain life. From marine ecosystems to deserts, the savanna to

the grasslands, ecosystems are diverse and varing. With an ecosystem, there are both biotic and abiotic

factors that contribute to sustaining life. Biotic factors are living things like animals, plants, and bacteria,

whereas abiotic factors are non-living things like air, temperature, and rocks. Both factors help plants and

animals flourish in the ecosystem.

There are three different types of biotic factors-

producers, decomposers and consumers, Producers

are organisms that use energy from the sun to create

their own food, like green plants using photosynthesis.

Decomposers are organisms that get their energy by

feeding on producers or animals that eat producers.

These biotic factors co-exist, cooperate, and compete

with one another within the ecosystem.

Multiple Choice

What is the ultimate source of energy in any food chain?

• the sun

• producers

• consumers

• decomposers

Multiple Choice

On your whiteboard write the sentence stem and fill in the blanks.

Environments include both _____ and _____ things.

• resources; factors
• air; water
• living; nonliving
• buildings; animals

Multiple Choice

Air, water, and sunlight are all ________ components of an ecosystem.

• factors
• nonliving
• man-made
• living

Abiotic factors are important for survival, and there are three- sunlight, temperature, and water. Sunlight is

required for plants to grow, and it provides energy to warm the earth’s atmosphere. Temperature impacts

the types of animals and plants will adapt, migrate, or become dormant in order to survive in their

environment. Water is crucial for survival; without it, life would cease to exist! Most all organisms use

water in some way to sustain life.

Within an ecosystem, there are different levels of organization. The

smallest level is the organism, which is simply a life form. Next is a

niche, which is the organism’s role in an ecosystem and how the

organism responds to the the resources around it. A habitat comes

next,the natural home or environment of animals, plants, and other

organisms. A population is all of the organism of one species that

make up the group and a community is all the populations living in

an area. The ecosystem is the broadest and largest level of

organization, and the place where all living and non-living

organisms come together to live in harmony.

Labeling

Turn and Talk about what factors you think are biotic and abiotic.

Drag the labels to the correct place on the picture.

Drag labels to their correct position on the image

biotic

biotic

abiotic

abiotic

biotic

Match

Match the following

• organism

• populations

• community

• ecosystem

a single life form

all of the organisms of one species that make up a group

all the populations living in an area

place where all living and non-living organisms interact

• a single life form

• all of the organisms of one species that make up a group

• all the populations living in an area

• place where all living and non-living organisms interact

7.10B Biodiversity

We will describe how biodiversity contributes to the sustainability of an ecosystem by viewing videos and reading the slides.

I will describe how biodiversity contributes to the sustainability of an ecosystem by answering questions with 100% accuracy

Open Ended

Ink -Pair-Share

See what you already know: What is biodiversity? (Write your best answer in complete sentences.)

What is Biodiversity

Biodiversity is the variety of species in a defined area or the amount of genetic variation within a population of organisms.

In simple terms Bio = life and diversity = variety. Biodiversity = Variety of life

Multiple Choice

Which ecosystem has the greatest biodiversity?

Genetic diversity

• This is the variation in genes that exist within a species

• The larger the gene pool (different traits), the greater the chance of surviving!

• For example, if a disease came that would destroy all of the red apples, there are many apples that would survive. If all the apples were red, they would all be gone!

Species Diversity

• The number of species and the abundance (amount) of each species that live in a particular location.

• Think about it - the more species, the larger the food web...

• The larger the food web, the more options animals have...

• The more options, the better off they are when one of the options disappears!

Ecological Diversity

• This is the variety of ways species interact with each other and the environment.

• Think about this as the difference between an ocean coral reef and a Tropical Rainforest!

Benefits of Biodiversity

• Boosts ecosystem productivity - more variety

• More biodiversity means that the area is more resistant to changes (it is more sustainable!)

• More biodiversity means an area can better recover from a variety of disasters (floods, winds, diseases, etc)

Ecological Succession

We will observe, record, and describe the role of ecological succession such as in a microhabitat of a garden with weeds by viewing the PowerPoint Presentation.

I will observe, record, and describe the role of ecological succession such as in a microhabitat of a garden with weeds by answering questions with 100% accuracy.

Pioneer Species

Pioneer (first ones there) Species are plant organisms that can grow on rock.

Lichen and Mosses are the pioneer species of primary succession.

Multiple Choice

Choral Response

The growth of which of the following usually occurs first in primary succession on a bare rock?

• grasses

• trees

• lichens

• shrubs

Multiple Select

Table Talk

Choose which of the following answers describe primary succession (may be more than one answer)

• starts with no soil

• starts with soil

• takes centuries to occur

• takes decades to occur

Multiple Select

Choose which of the following answers describe secondary succession (may be more than one answer)

• starts with no soil

• starts with soil

• takes centuries to occur

• takes decades to occur

Open Ended

Ink- Pair- Share

Which type of ecological succession is occurs faster? Primary or Secondary Succession? Explain.

Environmental Changes

The Important details you need to know.

Multiple Select

Environmental change: a change or disturbance of the environment most often caused by human influences and natural ecological processes.

Which do you think are examples of environmental changes?

(Click all that apply)

• Floods

• Droughts

• Fires

• Deforestation

• Overpopulation

Short Term Environmental Changes

• Occurs quickly

• Affects organisms immediately

• Organisms move away or die

Any environmental change that occurs in minutes to hundreds of years is considered a short-term change

Minutes to 100's of years (not 1000's of years)

Multiple Choice

Natural Disasters such as, earthquakes, flooding, and volcanic eruptions can cause ...

• short term changes

• long term changes

Long Term Environmental Changes

• Occurs gradually

• Affects organisms slowly

• Organisms adapt or go extinct

Effects of Long-Term Environmental Change Long-term environmental changes can also have lasting effects.

• • Adaptation —a species attempts to adjust to a new environment through natural selection.

• • Some individuals may be better suited to the new environment than others.

• • Speciation —a new species forms through evolution.

• • Extinction —a species that cannot adapt will die out.

Multiple Choice

A natural process resulting in changes to an organism leading to adaptations.

• Natural Selection

• selective breeding

• environmental change

Multiple Choice

an inherited characteristic that increases an organism's chance of survival

• biodiversity

• environmental change

• adaptation

Multiple Choice

What two environmental changes can be found in this image?

• pollution and climate change

• climate change and urbanization

• deforestation and pollution

• urbanization and deforestation

Effects of Environmental changes

YOU will need to determine the effect (results) of the environmental changes.

Think of the environmental change as the "problem"

and the effect is how the organism will try to "fix it"

Multiple Choice

• A

• B

• C

• D

Multiple Choice

• F

• G

• H

• J