TOPIC: PlantsAim: Explain the process of

photosynthesis.

Do Now: Explain the two types of nutrition.

HW:

Photosynthesis •Process in which

LIGHT energy is converted into CHEMICAL energy (food)

•Autotrophic nutrition

•Occurs in chloroplasts

–Contain chlorophyll = green pigment that absorbs light

A

B

C

F

E

D

EquationCarbon + dioxide

water

oxygenglucose +water +light

Chlorophyll

light6CO2 +12H2O C6H12O6 + 6H2O + 6O2Chlorophyll

(food) (wastes)

Light• http://www.phschool.com/science/biology_place/biocoach/photosy

nth/action.html

•Most effective: blue & red–Easily absorbed

•Least effective = green –reflected

What is the glucose used for?

Respiration (aerobic)Glucos

e

ATP

Why are plants important to living things?

1. Produces food for itself & all other organisms (food chains)

2. Removes CO2 from the air & adds O2

• http://www.youtube.com/watch?v=C1_uez5WX1o

Let’s review…

1. What are the raw materials of photosynthesis.

2. In which cell organelle does photosynthesis occur?

3. For which life process is the glucose produced used for?

4. Give one difference between photosynthesis and cell respiration.

Review: Identify whether the substance is a raw material, product or source of energy.

1. Oxygen

2. Carbon dioxide

3. Sunlight

4. Water

5. Glucose

Green plants make food by the process of

a. photosynthesis

b. respiration

c. excretion

d. digestion

The gas released during photosynthesis is

a. oxygen

b. carbon dioxide

c. nitrogen

d. carbon monoxide

The basic food material produced by green plants is

a. fat

b. glucose

c. proteins

d. minerals

The substance is green plants that captures the sun’s light energy is

a. chlorophyll

b. mesophyll

c. phloem

d. cuticle

During photosynthesis, molecules of carbon dioxide and water are changed into

a. oxygen and carbon dioxide

b. glucose and water

c. glucose and chlorophyll

d. oxygen and glucose

Which of the following materials is not needed for photosynthesis?

a. sunlight

b. chlorophyll

c. water

d. oxygen

A process in which glucose is broken down to release energy is called

a. diffusion

b. respiration

c. photosynthesis

d. osmosis

Aerobic respiration requires

a. oxygen

b. carbon dioxide

c. light

d. chlorophyll

One substance that is generated from aerobic respiration is

a. ATP

b. protein

c. glucose

d. oxygen

Respiration occurs in

a. chloroplasts

b. nuclei

c. mitochondria

d. ribosomes