Lesson 2

What is the primary source of energy for producers on Earth?

• The Moon

• The Sun

• The Wind

• The Ocean

Which process do plants use to convert sunlight into usable energy?

• Chemosynthesis

• Photosynthesis

• Fermentation

• Respiration

What is the main difference between photosynthesis and chemosynthesis?

• Photosynthesis happens in the ocean, while chemosynthesis happens on land.

• Photosynthesis produces sulfur, while chemosynthesis produces oxygen.

• Photosynthesis occurs in animals, while chemosynthesis occurs in plants.

• Photosynthesis uses sunlight, while chemosynthesis uses chemical energy.

What percentage of energy typically transfers from one trophic level to the next?

• 1%

• 10%

• 25%

• 50%

What is the term for the amount of energy that producers store after respiration?

• Gross Primary Productivity

• Tertiary Productivity

• Secondary Productivity

• Net Primary Productivity