PHOTOSYNTHESIS

EL REDIN SCHOOL

SCIENCE

YEAR 5

MADE BY MR. FELIPE

WHAT IS

PHOTOSYNTHESIS?

Itistheprocesswhichenablesplantstomakefoodfrom:

• Water

• Carbondioxide

• Sunlight

WHERE DOES IT TAKE PLACE?

• Photosynthesistakes place in

theleavesandothergreenplantcells

HOW DOES PHOTOSYNTHESIS WORK?

(thephotosynthesisprocess)

• Step 1: Mineralsfromthesoildissolve in water

Minerals + water = RAW SAP

• Step 2: plantsabsorbtheRAW SAP

fromthesoilthroughtheirROOTS andROOT HAIRS

• Step 3: theRAW SAP travels up theSTEM totheLEAVES

through

long tubescalledXYLEM VESSELS

• Step 4: CARBON DIOXIDE

enterstheplantthroughtinyporesontheundersurface

oftheLEAVEScalledSTOMATA

• Step 5: insidetheLEAVES, theRAW SAP mixes

withtheCARBON DIOXIDE

andbecomesGLUCOSE.

. CHLOROPHYLL is a greensubstance in

theleaveswhich traps SUNLIGHT.

Sunlightisesentialforphotosynthesis, so itonlytakes

place duringtheday.

• Step 6: GLUCOSE isdistributedfromtheLEAVES

toallpartsoftheplantthroughtubescalledPHLOEM

VESSELS.

Plantsgive off OXIGEN as a

wasteproductofphotosynthesis

RESPIRATION

• PlantstakeOXYGENfromtheairandgive off CARBON

DIOXIDE. They combine

OXIGENwithnutrientstogetenergy.

• This gas exchangeiscalledRESPIRATION. Ittakes place

in theleaves ALL THE TIME, dayand night

RESPIRATION

• Plants produce more oxygenthanthey use. As a result,

forestsandjungles are importantforus as

sourcesofoxygen