Photosynthesis State the purpose of photosynthesis Describe photosynthesis

Photosynthesis * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

What is photosynthesis? • Where does it happen? • What do you know about it already? • Why is it useful? * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

Looking at the underside of a leaf • Look at the underside of a leaf • Capture a photograph • Stick the photograph in your book – label the following • What are the parts for? epidermis leaf guard cell stomata (singular stoma) Video link * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

Structure of a leaf * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

What happens during photosynthesis? carbon dioxide water light energy glucose oxygen chlorophyll Why is this useful to all living organisms? * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

How do we know photosynthesis happened? Starch testing Plants turn glucose (a monomer) into starch (a polymer) • We pick a leaf • We fix the leaf • We remove the chlorophyll • We soften the leaf • We add iodine Ethanol is flammable Black = starch Brown = no starch * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

Limiting factors (1) Oxygen collected Bicarb solution No bicarbonate solution Weak bicarbonate solution Strong bicarbonate solution Pond weed What is the bicarb for? What variables are we controlling? * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth

Limiting factors (2) Oxygen collected Bicarb solution Pond weed Dark Light What variables are we controlling? * ** *** State the purpose of photosynthesis Describe photosynthesis by writing a word equation Explain why photosynthesis is important to life on Earth