Photosynthesis

What are autotrophs?  

• An organism that cannot make it’s own food.
• An organism that eats food.
• An organism that makes its own food.

 2. What makes a plant green?

• carbon
• the sun
• chlorophyll

 3. Why do living things need energy?

• To move around
• To reproduce
• To carry out life's functions
• All of the above

     4. How do plants obtain energy?

• From the dirt
• From the stomata
• From the sunlight

     5. How does an insect eating a leaf show its dependence on the sun?

• because the sun provides light 
• When an insect eats the leaf it has produced energy from photosynthesis and the process of photosynthesis requires sunlight 
• The insect does not depend on the sun.

     6. Which is the chemical equation for photosynthesis?

• 6CO_{2 +} 6H₂O ------>C₆H₁₂O₆ + 6O₂
• Fe + Cl2 = FeCl3
• C6H5COOH + O2 = CO2 + H2O
• H2SO4 + K4Fe(CN)6 + KMnO4

 7. In the photosynthesis equation explain the role of light energy.

• light energy is needed for pigment.
• light energy is discarded in photosynthesis
• light energy is needed in order for the chemical reaction to occur.

     8.  What are the substances needed for photosynthesis

• water and oxygen 
• water and sugar
• water and carbon dioxide

   9. What substances are produced during photosynthesis?

• sugar and oxygen
• carbon dioxide and salt
• oxygen and chlorophyll 

     10. Which type of day would you expect a plant to produce more oxygen

• Cloudy
• Rainy
• Sunny
• Doesn't matter