Photosynthesis life from light and air
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Photosynthesis: Life from Light and Air. Plants are energy producers. Like animals, plants need energy to live unlike animals, plants don’t need to eat food to make that energy Plants make both FOOD & ENERGY animals are consumers plants are producers. How do plants make energy & food?.

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Photosynthesis: Life from Light and Air

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Photosynthesis life from light and air

Photosynthesis:LifefromLight andAir


Plants are energy producers

Plants are energy producers

  • Like animals, plants need energy to live

    • unlike animals, plants don’t need to eat food to make that energy

  • Plants make both FOOD & ENERGY

    • animals are consumers

    • plants are producers


How do plants make energy food

How do plants make energy & food?

  • Plants use the energy from the sun

    • to make ATP energy

    • to make sugars

      • glucose, sucrose, cellulose, starch, & more

sun

ATP

sugars


Building plants from sunlight air

H2O

CO2

Building plants from sunlight & air

sun

  • Photosynthesis

    • 2 separate processes

    • ENERGY building reactions

      • collect sun energy

      • use it to make ATP

    • SUGAR building reactions

      • take the ATP energy

      • collect CO2 from air & H2O from ground

      • use all to build sugars

ATP

+

sugars

carbon dioxide

CO2

water

H2O

sugars

C6H12O6

+


Using light air to grow plants

(ATP) = used to build the sugar

carbon

dioxide

sun

energy

 glucose + oxygen

+ water +

sun

energy



6CO2

+

6H2O

+

+

6O2

C6H12O6

Using light & air to grow plants

  • Photosynthesis

    • using sun’s energy to make ATP

    • using CO2 & water to make sugar

    • in chloroplasts

    • allows plants to grow

    • makes a waste product

      • oxygen (O2)


What do plants need to grow

CO2

H2O

sugars

What do plants need to grow?

  • The “factory” for making energy & sugars

    • chloroplast

  • Fuels

    • sunlight

    • carbon dioxide

    • water

  • The Helpers

    • enzymes

Make ATP!Make sugar!I can do it all…And no oneeven notices!

sun

ATP

enzymes


Photosynthesis

H2O

CO2

sun

Photosynthesis

ENERGYbuilding reactions

ATP

ADP

SUGARbuilding reactions

used immediatelyto synthesize sugars

sugar


Chloroplasts are only in plants

Chloroplasts are only in plants

animal cells

plant cells


Chloroplasts

CO2

Chloroplasts

absorbsunlight & CO2

Leaf

sun

Leaves

Chloroplastsin cell

Chloroplast

Chloroplast

Chloroplasts

contain

Chlorophyll

makeENERGY & SUGAR


So what does a plant need

light

energy

6CO2

+

6H2O

+

+

6O2

C6H12O6

So what does a plant need?

  • Bring In

    • light

    • CO2

    • H2O

  • Let Out

    • O2

  • Move Around

    • sugars

leaves

shoot

roots


Leaf structure

vascular bundle (vein)

xylem (water)

phloem (sugar)

cuticle

epidermis

palisades

layer

spongy

layer

epidermis

stomate

cuticle

guardcells

Leaf Structure


Transpiration

xylem (water)

stomate

guardcells

Transpiration

O2

H2O

CO2

  • CO2 in

  • O2 out

  • water out

    • so it gets to leaves from roots

O2

H2O

CO2


Transpiration1

Transpiration

  • Water evaporates from the stomates in the leaves

    • pulls water up from roots

      • water molecules stick to each other

    • more water is pulled up tree from ground


Function of leaf structures

Function of Leaf Structures

  • Cuticle

    • waxy coating reduces water loss

  • Epidermis

    • skin protecting leaf tissues

  • Palisades layer

    • high concentration of chloroplasts

      • collecting sun’s energy

    • photosynthesis

      • making ATP & sugars

  • Spongy layer

    • air spaces

      • gas exchange

        • CO2 in for sugar production, remove waste O2


Stomates guard cells

Stomates & Guard Cells

  • Function of stomates

    • CO2 in

    • O2 out

    • H2O out

      • gets to leaves for photosynthesis

  • Function of guard cells

    • open & close stomates

guard cell

stomate


Guard cells homeostasis

Guard cells & Homeostasis

  • Homeostasis

    • keeping the internal environment of the plant balanced

  • Stomates open

    • let CO2 in

      • needed to make sugars

    • let H2O out

      • needed for photosynthesis

    • let O2 out

      • get rid of waste product

  • Stomates close

    • if too much H2O evaporating


Xylem

Xylem

carry water up from roots


Phloem food conducting cells

Phloem: food-conducting cells

  • carry sugars around the plant wherever they are needed

    • new leaves

    • fruit & seeds

    • roots


How are they connected

carbon

dioxide

sun

energy

 glucose + oxygen

+ water +

glucose + oxygen  carbon + water + energy

C6H12O6

+

6O2

6CO2

+

6H2O

+

ATP

dioxide

light

energy

6CO2

+

6H2O

+

+

6O2

C6H12O6

How are they connected?

Respiration

Photosynthesis


Energy cycle

sun

glucosesugars

H2O

Energy cycle

Photosynthesis

plants

CO2

O2

animals, plants

Cellular Respiration

ATP

The Great Circleof Life!

Mufasa?


Another view

sun

H2O

Another view…

capturelight energy

Photosynthesis

synthesis

producers, autotrophs

CO2

O2

organicmoleculesfood

waste

waste

waste

consumers, heterotrophs

digestion

Cellular Respiration

ATP

releasechemical energy


The poetic perspective

air

The poetic perspective

  • All of the solid material of every plantwas built out of thin air

  • All of the solid material of every animal was built from plant material

sun

Then all the cats, dogs, mice, people & elephants…are really strands of air woven together by sunlight!


Photosynthesis life from light and air

Got the energy…

Ask Questions!!


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