LO: SWBAT explain how plants absorb light for photosynthesis

DN: Write the equation for photosynthesis. What are the raw materials and the end products?

HW: Quiz Monday, Castle Learning

What chemical reaction is this?

Why is it calledPHOTO …….SYNTHESIS?

Photo …….. Light

Synthesis…….. To make

Where is the energy coming from?

What color is sunlight?

The Sun

White

Is white light really white?What do you see?

ROY G BIV

Where does photosynthesis happen?

In what organelles does it happen?

Why are chloroplasts green?

Chlorophyll – green pigmentTraps ROY ___ BIV

It reflects Green

How do chloroplast trap light energy?

They have Chlorophyll green pigment that absorbs all colors

Of white light, except_______

Absorption of Light byChlorophyll a and Chlorophyll b

V B G YO R

Chlorophyll b

Chlorophyll a

Section 8-2

Figure 8-5 Chlorophyll Light Absorption

Go to Section:

Chlorophyll is not the only pigment!

In theFall we See theOthers

Would a plant grow in green light?

No because it will not absorb any energy to carry out photosynthesis- chlorophyll

reflects green light

What colors do they absorb?

How can we separate these pigments?

ChromatographySeparates the mixtures.

Substances that do not sticktightly to the paper will bepicked up by the solvent &

moved along quickly