1 Page 156March 4, 2013 Focus: Abiotic and Biotic Factors, Photosynthesis Objective: 6.L.1.2 IWBAT...

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Focus: Abiotic and Biotic Factors, Photosynthesis Objective: 6.L.1.2 IWBAT to explain the significance of the processes of photosynthesis, evaluate the importance of abiotic and biotic factors in an ecosystemHW: ecosystems reading sheetWarm Up: Glossary Update (see master on your desk)

http://www.youtube.com/watch?v=lDwUVpOEoE4

http://www.youtube.com/watch?v=C1_uez5WX1o

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PRE-VIEWPRE-VIEWLook at the two pictures and choose:Look at the two pictures and choose:

a.a. Neither of them is livingNeither of them is living

b.b. 1 is living, 2 is non-living1 is living, 2 is non-living

c.c. 2 is living, 1 is non-living2 is living, 1 is non-living

d.d. Both 1 and 2 are livingBoth 1 and 2 are living

***How did you choose your answer?***How did you choose your answer?

1 2

Introduction to

Ecology

Introduction to

Ecology

What is Ecology?What is

Ecology?

What is Ecology??What is Ecology??What is Ecology??What is Ecology??

•The The study of interactionsstudy of interactions betweenbetween organisms organisms and and their their environmentenvironment..

• It It explainsexplains how living how living organisms organisms affectaffect each each other and the world they other and the world they live in.live in.

•The The study of interactionsstudy of interactions betweenbetween organisms organisms and and their their environmentenvironment..

• It It explainsexplains how living how living organisms organisms affectaffect each each other and the world they other and the world they live in.live in.

An OrganismAn OrganismAn OrganismAn Organism•Organism:Organism:

An individual An individual living thing that living thing that is made of is made of cells, cells, uses energy, uses energy, reproduces, reproduces, responds, responds, grows, and grows, and developsdevelops

•Organism:Organism:An individual An individual living thing that living thing that is made of is made of cells, cells, uses energy, uses energy, reproduces, reproduces, responds, responds, grows, and grows, and developsdevelops

http://www.biology-resources.com/drawing-amoeba-arcella.html

An Ecosystem may be very small such as:

An Ecosystem may be very small such as:

• A backyard

• A pond

• A playground

• A backyard

• A pond

• A playground

Some may be very large like:Some may be very large like:

• The deserts of Africa

• The rain forest of Brazil

• The saltwater oceans

• The deserts of Africa

• The rain forest of Brazil

• The saltwater oceans

All Ecosystems Have…All Ecosystems Have…• Example: Think about a pond…• Example: Think about a pond…

A Pond EcosystemA Pond Ecosystem• What are some things found in ponds?• What are some things found in ponds?

A Pond EcosystemA Pond Ecosystem• What are some things found in ponds?

• Water, fish, plants, birds, bugs, soil sunlight, air,

bacteria,

animals

• What are some things found in ponds?


bacteria,

animals

A Pond EcosystemA Pond EcosystemAre all of these things living?


bacteria,

animals

Are all of these things living?


bacteria,

animals


NO!! An ecosystem has many important parts that are living and non-living.


NO!! An ecosystem has many important parts that are living and non-living.


Living Non-Living Fish Water

Plants Soil Birds Sunlight Bugs Air Bacteria


Living Non-Living Fish Water

Plants Soil Birds Sunlight Bugs Air Bacteria

The Nonliving The Nonliving EnvironmentEnvironmentThe Nonliving The Nonliving EnvironmentEnvironment

• Abiotic factorsAbiotic factors- the - the nonliving parts of an nonliving parts of an organism’s organism’s environment.environment.

• Examples Examples include air, include air, water, temperature, water, temperature, rocks and minerals, rocks and minerals, light, and soil.light, and soil.

• Abiotic factors Abiotic factors affect affect an organism’s life.an organism’s life.

• Abiotic factorsAbiotic factors- the - the nonliving parts of an nonliving parts of an organism’s organism’s environment.environment.

• Examples Examples include air, include air, water, temperature, water, temperature, rocks and minerals, rocks and minerals, light, and soil.light, and soil.

• Abiotic factors Abiotic factors affect affect an organism’s life.an organism’s life.

http://upload.wikimedia.org/wikipedia/en/6/69/Lightning_in_Arlington.jpg

The Living EnvironmentThe Living EnvironmentThe Living EnvironmentThe Living Environment

•Biotic factorsBiotic factors- all the - all the living (or once-living) living (or once-living) organisms that inhabit organisms that inhabit an environment.an environment.

•All All organisms depend organisms depend on others directly or on others directly or indirectlyindirectly for food, for food, shelter, reproduction, or shelter, reproduction, or protection.protection.

•Biotic factorsBiotic factors- all the - all the living (or once-living) living (or once-living) organisms that inhabit organisms that inhabit an environment.an environment.

•All All organisms depend organisms depend on others directly or on others directly or indirectlyindirectly for food, for food, shelter, reproduction, or shelter, reproduction, or protection.protection.

Biotic FactorsBiotic Factors

The living parts of an ecosystem.

They include animals, plants, fungi, protists, and bacteria.

The living parts of an ecosystem.

They include animals, plants, fungi, protists, and bacteria.

What are the LIVING parts of an ecosystem called?



Biotic Factors


Biotic Factors

What are the NON-LIVING parts of an ecosystem called?



Abiotic Factors


Abiotic Factors

Abiotic or Biotic?Abiotic or Biotic?How do you know?How do you know?Abiotic or Biotic?Abiotic or Biotic?

How do you know?How do you know?

Abiotic or Biotic?Abiotic or Biotic?Abiotic or Biotic?Abiotic or Biotic?

BioticBiotic


AbioticAbiotic

Abiotic or Biotic?Abiotic or Biotic?How do you know?How do you know?Abiotic or Biotic?Abiotic or Biotic?

How do you know?How do you know?


Abiotic: Water and rocks are non-livingAbiotic: Water and rocks are non-living


AbioticAbiotic


BioticBiotic

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BioticBiotic


BioticBiotic

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BioticBiotic

List the biotic and abiotic factors in this ecosystemList the biotic and abiotic factors in this ecosystem

Biotic and Abiotic Factors in the Ecosystem


Biotic Abiotic (Living) (Non-Living) Flowers Water

Plants Soil Birds Sunlight Bugs Air Bacteria Rocks Animals Rain

Biotic Abiotic (Living) (Non-Living) Flowers Water

Plants Soil Birds Sunlight Bugs Air Bacteria Rocks Animals Rain

\

List the biotic and abiotic factors in this ecosystemList the biotic and abiotic factors in this ecosystem



Biotic Abiotic (Living) (Non-Living) Zooplankton Water

Phytoplankton Sea Ice Fish Sunlight Lobster Air Seals Rocks Bears CO2

Biotic Abiotic (Living) (Non-Living) Zooplankton Water

Phytoplankton Sea Ice Fish Sunlight Lobster Air Seals Rocks Bears CO2

What role do abiotic factors play in an ecosystem?

What role do abiotic factors play in an ecosystem?

What role do abiotic factors What role do abiotic factors play in an ecosystem?play in an ecosystem?

SunSun

*Provides *Provides Light, Heat, Light, Heat, and Energyand Energy

*Without the *Without the sun: All biotic sun: All biotic factors (all factors (all living things) living things) would diewould die

4646


WaterWater

*Provides a *Provides a place to live for place to live for many creatures, many creatures, hydrates all hydrates all biotic factorsbiotic factors

*Without water: *Without water: All biotic factors All biotic factors (all living things) (all living things) would diewould die

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AirAir

*Helps many *Helps many biotic factors biotic factors breathebreathe

*Without air: *Without air: Most biotic Most biotic factors (most factors (most living things) living things) would diewould die

4848


TemperatureTemperature

*Many *Many creatures can creatures can only survive in only survive in certain certain temperaturestemperatures

*Extreme *Extreme temperature temperature changes: changes: Could kill many Could kill many of the biotic of the biotic factorsfactors

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SoilSoil*Provides a *Provides a home, home, nutrients, nutrients, supportsupport*Without the *Without the soil: Plants soil: Plants would die would die and many and many biotic factors biotic factors would be would be affectedaffected

What would happen to all the biotic factors if there were no

abiotic factors?


abiotic factors?


abiotic factors?


abiotic factors?

All biotic factors would DIE without abiotic factors!!!!!!

All biotic factors would DIE without abiotic factors!!!!!!

What would happen to the biotic factors in this

ecosystem if…

What would happen to the biotic factors in this

ecosystem if…

There was no sun

There was no water

There was no soil

There were no minerals

There was no sun

There was no water

There was no soil

There were no minerals

Plants Make Their Own Food: A Recipe for

Photosynthesis

Plants: One Part of the Carbon Cycle

Plants: One Part of the Carbon Cycle

When carbon dioxide is taken in by plants, what is that called?

When carbon dioxide is taken in by plants, what is that called?

PHOTOSYNTHESIS!

Photosynthesis is How Plants Make Their FoodPhotosynthesis is How Plants Make Their Food

Plants do not need to go to the cafeteria for lunch!

They do need a few special ingredients, though…

Plants do not need to go to the cafeteria for lunch!

They do need a few special ingredients, though…

What is needed for photosynthesis to

occur?


occur?Carbon Dioxide (CO2)

The plant’s leaves take in CO2

that is breathed out by

animals (and people).

Carbon Dioxide (CO2)The plant’s leaves take in CO2

that is breathed out by

animals (and people).CO2


occur?


occur?LightThe plant’s leaves use the light to make a sugar called glucose.

LightThe plant’s leaves use the light to make a sugar called glucose.


occur?


occur?Water

The plant’s leaves and roots soak up water to use for photosynthesis.

WaterThe plant’s leaves and roots soak up water to use for photosynthesis.

What is MADE by plants as a result of

photosynthesis?


photosynthesis?Water

Plants release water through their leaves. This is called transpiration!

WaterPlants release water through their leaves. This is called transpiration!


photosynthesis?


photosynthesis?Oxygen

(O2)

Oxygen

(O2)

What is MADE by plants as a result of photosynthesis?What is MADE by plants as a result of photosynthesis?

Sugar (Food)Plants make their own food by performing photosynthesis

Sugar (Food)Plants make their own food by performing photosynthesis

A Formula for PhotosynthesisA Formula for

PhotosynthesisSun + CO2 + Water = Food + O2 +

Water

Sun + CO2 + Water = Food + O2 + Water

+ + =

+ +

CO2

O2

Sun

Water

WaterPlant

Food

It’s question time!What is the process by which plants make food?

* Photosynthesis

Photosynthesis is the process by which plants make food. A green plant makes food using light energy. Green plants get light energy from the sun.

Look at this picture of the desert. It is very dry and does not rain much here.Why do you think there are not many plants in the desert?

Plants need water to do photosynthesis (to make their food).

Now it’s YOUR TURNNow it’s YOUR TURN

Plants Need Plants Make

3 factors 3 factors

plants need plants make


3 factors 3 factors

plants need plants make

PHOTOSYNTHESISPHOTOSYNTHESIS



Sunlight

Carbon Dioxide(CO2)

Water

Sugar (Food)

Oxygen (O2)

Water

Draw…Draw…Draw a Plant. Show the:

3 factors that plants need for photosynthesis

AND

3 factors plants make from photosynthesis

Draw a Plant. Show the:

3 factors that plants need for photosynthesis

AND

3 factors plants make from photosynthesis

WATER

SUGAR

WHY IS PHOTOSYNTHESIS SO IMPORTANT?

WHY IS PHOTOSYNTHESIS SO IMPORTANT?

PHOTOSYNTHESIS is one of the most important biological process on earth!

• Provides the oxygen (O2) we breathe

• Consumes extra Carbon Dioxide CO2

• Makes Plant Food

• Gives US food!

PHOTOSYNTHESIS is one of the most important biological process on earth!

• Provides the oxygen (O2) we breathe

• Consumes extra Carbon Dioxide CO2

• Makes Plant Food

• Gives US food!

What is photosynthesis??What is photosynthesis??• The way plants make their food

(sugar)• The way plants make their food

(sugar)

Why do plants need sugar?Why do plants need sugar?

• Sugar (Glucose) is the food for the plant.

• It gives the plant energy to grow.

• Sugar (Glucose) is the food for the plant.

• It gives the plant energy to grow.

HOW do plants MAKE sugar?

HOW do plants MAKE sugar?

To perform photosynthesis, green plants need...

CHLOROPHYLL!

(Chlorophyll is the green

material in plants that

stores sunlight for plants

to make food)

To perform photosynthesis, green plants need...

CHLOROPHYLL!

(Chlorophyll is the green

material in plants that

stores sunlight for plants

to make food)

What part of the plant produces food?

In most plants the leaves are the special parts where the most food is made.

Leaves contain a chemical called chlorophyll. Chlorophyll is the green matter in plants that traps light energy to produce food.

How Are Plants and Animals Different?

How Are Plants and Animals Different?

• Animals cannot make their own food.

• Animals do NOT have chlorophyll (even green animals don’t have it!)

• Animals cannot make their own food.

• Animals do NOT have chlorophyll (even green animals don’t have it!)

• Plants can make their own food.

• Plants have chlorophyll

Plants use water, sunlight and carbon dioxide to make food.

This is called… photosynthesis

Only organisms with the green material CHLOROPHYLL can perform photosynthesis.

WHY DO LEAVES CHANGE COLOR IN THE FALL?

Plants make their own food. They take water from the ground through their roots. They take a gas called carbon dioxide from the air. They turn water and carbon dioxide into food using sunlight and something called chlorophyll. Chlorophyll is green. It gives leaves their green color. Winter days are short and dry. Many plants stop making food in the fall. The chlorophyll goes away. Then we can see orange and yellow colors. These colors were in the leaves all summer, but the green covered them up. Some leaves turn red. This color is made in the fall, from food trapped in the leaves. Brown colors are also made in the fall. They come from wastes left in the leaves.

Photosynthesis: Plants make their food


Plants Need-Carbon Dioxide-Water-Sunlight


Plants Make-Oxygen-Water-Food

Photosynthesis: Plants make their food

Plants have chlorophyll-Green-Stores Sunlight-Only plants have it. This is why plants can use sunlight to make food

Why can plants make their food??

Plants Make Their Food with Chlorophyll

Word to know: Chlorophyll: The green material in plants that stores sunlight for plants to make food (by photosynthesis)

Why are plants green?

Why can plants make their own food?

How do plants use the sun to make food?

Why aren’t people green?

Why can’t people make their own food?

Because plants have chlorophyll

Because plants have chlorophyll

Chlorophyll absorbs sunlight

Because people don’t have chlorophyll

Because people don’t have chlorophyll

Draw A Comic Strip Explaining Photosynthesis

Draw A Comic Strip Explaining Photosynthesis

Be creative! 1. Must have a picture in every square2. Must use all of the following words:•Photosynthesis•Chlorophyll•Carbon Dioxide•Sunlight•Water•Food ***BONUS: If you get done early,-Add color to your drawing-Add another box to your comic for more detail

Be creative! 1. Must have a picture in every square2. Must use all of the following words:•Photosynthesis•Chlorophyll•Carbon Dioxide•Sunlight•Water•Food ***BONUS: If you get done early,-Add color to your drawing-Add another box to your comic for more detail

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