Aim: How do Autotroph's make their food?

Do Now: Create a chemical

equation that illustrates what's happening here.

Homework:Textbook pages

218 - 221 Q’s 1,3,4 &6

complete sentences

Do Now: Create a chemical

equation that illustrates what's happening here.

Homework:Textbook pages

218 - 221 Q’s 1,3,4 &6

complete sentences

Photosynthesis

• The process of converting solar energy to chemical energy in form of organic compounds.

• Organic compounds include sugars, lipids, and proteins.

• The process of converting solar energy to chemical energy in form of organic compounds.

• Organic compounds include sugars, lipids, and proteins.

What Happens during What Happens during Photosynthesis? Photosynthesis?

What Happens during What Happens during Photosynthesis? Photosynthesis?

1.Chlorophyll traps light causing Water

to split into H and O

H2O H2 + O

2. Oxygen (waste) exits through stomata

Hydrogen = used for next part

H2O H2 + O

Oxygen (air)

3.CO2 and H combine

to form glucose

CO2+ H

Glucose (C6H12O6

)

Chemical reaction Chemical reaction Chemical reaction Chemical reaction

Sunlight + Carbon dioxide + Water Glucose + Oxygen

(Raw materials/reactants) (products)

SUNLIGHT + H20 + CO2 C6H12O6 + O2

• Sunlight = provides the energy needed to begin the process of photosynthesis

• Reactants/ Raw materials = the chemicals needed to start process

• Products = the substances made from the process.

Sunlight + Carbon dioxide + Water Glucose + Oxygen

(Raw materials/reactants) (products)

SUNLIGHT + H20 + CO2 C6H12O6 + O2

• Sunlight = provides the energy needed to begin the process of photosynthesis

• Reactants/ Raw materials = the chemicals needed to start process

• Products = the substances made from the process.

Carbon + dioxide

water

oxygenglucose +light

enzymes

light6CO2 +6H2O C6H12O6 + 6O2enzymes

http://www.kscience.co.uk/animations/photosynthesis.swf

(waste)

The formula of The formula of photosynthesisphotosynthesisThe formula of The formula of photosynthesisphotosynthesis

Define Photosynthesis. What is the energy source that

starts the process?

THE SUN

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What raw materials are used by the process of

photosynthesis?and

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CarbonDioxide

Water

What are the products of the photosynthesis ?

• Glucose (Sugar)

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O2

Where does Photosynthesis Where does Photosynthesis occur?occur?

Where does Photosynthesis Where does Photosynthesis occur?occur?

The The Leaf Leaf is the plant’s is the plant’s photosynthetic photosynthetic organ.organ.The The Leaf Leaf is the plant’s is the plant’s photosynthetic photosynthetic organ.organ.

• The leaf’s chlorophyll absorbs solar energy. This is where photosynthesis occurs.

• The leaf’s chlorophyll absorbs solar energy. This is where photosynthesis occurs.

CHLOROPLASTCHLOROPLASTCHLOROPLASTCHLOROPLAST

• SITE OF PHOTOSYNTHESIS• SITE OF PHOTOSYNTHESIS

The inside of the leaf:The inside of the leaf:

• The leaf is made up of many cells which contain organelles called chloroplasts.

• The leaf is made up of many cells which contain organelles called chloroplasts.

* See Leaf structure handout

Why Is the Sunlight important?Why Is the Sunlight important?

Sunlight or White light

Sunlight or white light is actually a combination of all the colors of the rainbow:

Blue, indigo, violet, green, yellow, orange, and red.

Plants appear green because they absorb all the colors except green, which is reflected .

It is the energy from light that energizes electrons which start the process of

photosynthesis.

Photosynthetic pigments: Which colors are most effective for photosynthesis?

Photosynthetic pigments: Which colors are most effective for photosynthesis?

Best color light for photosynthesis

Blue & redEasily absorbed

Different wavelengths of visible light are seen by Different wavelengths of visible light are seen by the human eye as different colors.the human eye as different colors.

WHYWHY ARE ARE PLA PLANTS NTS GREGREEN?EN?

Gammarays

X-rays UV Infrared Micro-waves

Radiowaves

Visible light

Wavelength (nm)

Sunlight minus absorbed Sunlight minus absorbed wavelengths or colors wavelengths or colors equals the apparent color equals the apparent color of an object.of an object.

The feathers of male cardinals are loaded with carotenoid pigments. These pigments absorb some wavelengths of light and reflect others.

Reflected light

Why are plants green?

Reflected lig

ht

Transmitted light

• Chloroplasts contain PIGMENTS (chlorophyll) that absorb the sun’s energy and use it to create glucose

Light

THE COLOR YOU SEE IS THE COLOR REFLECTED

Least effective = GREEN (reflected)

Define PhotosynthesisDefine Photosynthesis

It is the process that plants use to create food (organic materials) using the suns energy.

Final summary Final summary Final summary Final summary

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What is the equation for What is the equation for photosynthesis?photosynthesis?

SUNLIGHT + H20 + CO2 C6H12O6 + O2

What are the best color lights for photosynthesis

to occur?Blue & redBecause they are easily absorbed

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How do Autotroph’s make How do Autotroph’s make their own food?their own food?

How do Autotroph’s make How do Autotroph’s make their own food?their own food?

PhotosynthesisSong

Aim: How are plants adapted for autotrophic nutrition?

Aim: How are plants adapted for autotrophic nutrition?

Do Now:1.) 2.) Identify A and B

B

A

ROOTS STOMATA

LEAVES

VASCULAR TISSUE/BUNDLE

the root is the organ of a plant body that typically lies below the surface of the soilThe two major functions of roots are

ROOTS

1.) absorption of water and inorganic nutrients 2.) anchoring the

plant body to the ground

STOMATASTOMATA (stomate;

singular) is a pore found in the leaf

and stem epidermis that is

used for gas exchange

Guard cellsGuard cells are responsible for

regulating the size of this opening

Guard cells and HomeostasisGuard cells and Homeostasis

• Guard cells control the opening and closing of the stomata.

• This allows the leaf to control water loss (transpiration).

• They allow carbon dioxide to enter and oxygen to be released.

Guard Cell

Stomata

is the evaporation of water from plants that occurs at the leaves while their stomata are open (for the passage of CO2 and O2 during photosynthesis)

TranspirationTranspiration

Why are most plants green?The leaf and chloroplasts

• The organelle chloroplast contains the pigment chlorophyll which absorbs every color except green which is reflected.

• The organelle chloroplast contains the pigment chlorophyll which absorbs every color except green which is reflected.

How does chloroplast assist in autotrophic nutrition?

How does chloroplast assist in autotrophic nutrition?

The planet is 70% water so most photosynthesis occurs in the oceans.

The planet is 70% water so most photosynthesis occurs in the oceans.

• On land or under water, the process of photosynthesis is still the same: energy + carbon dioxide produces sugar and oxygen.

• The producers are algae and phytoplankton.

• On land or under water, the process of photosynthesis is still the same: energy + carbon dioxide produces sugar and oxygen.

• The producers are algae and phytoplankton.

Phytoplankton: producers in the oceans

Phytoplankton: producers in the oceans

Located just beneath the water’s surface

These producers form the foundation for marine food webs

What role does chloroplast and chlorophyll play in the process?

Chloroplast is the organelle inside the plant cell that photosynthesis takes place.

Chlorophyll is the pigment that attracts light to start the process.

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What is the least effective light for photosynthesis?

GREEN because most plants reflect the color!

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What is the photosynthetic organ of the plant?

The LEAF

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How does carbon dioxide enter the plant?

Carbon dioxide enters the leaf through openings called stomata

Stoma

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Photosynthesis review:

What part of the leaf regulates transpiration and gas exchange?

Guard Cells

Review Review

ReviewReviewReviewReviewGuard cells control opening of

stomata.

• Carbon dioxide enters the leaf through openings called stomata. Water is absorbed from the soil and is carried to the leaf.

Stomata=pores

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Photosynthesis review:

See video and take quiz;-)

Photosynthesis “The Summary” Photosynthesis “The Summary”