The main source of energy for all life comes from ____.

• the Earth
• the moon
• the sun
• the food we eat/make

Which statement about the energy needed to start photosynthesis is correct?

• Plants get the energy they need for photosynthesis from water.
• Plants get the energy they need for photosynthesis from soil.
• Plants get the energy they need for photosynthesis from sunlight.
• Plants do not require energy to perform photosynthesis.

What are the products of photosynthesis?

• Carbon dioxide and water
• Carbon dioxide and oxygen
• Glucose and oxygen
• Glucose and water

Which gas is used to start the process of  photosynthesis?

• hydrogen
• oxygen
• nitrogen
• carbon dioxide

Which of the following best describes photosynthesis?

• Photosynthesis converts radiant energy into chemical energy.
• Photosynthesis produces carbohydrates.
• Plants need sunlight, carbon dioxide, water, oxygen, and chlorophyll to complete photosynthesis.
• Plants use chlorophyll, water, and carbon dioxide to make sugar.

In which  organelle does photosynthesis occur?

• mitochondria
• stomata
• xylem
• chloroplast

Which of the following is considered a "waste product" of photosynthesis?

• glucose
• oxygen
• carbon dioxide
• sunlight

What is another name for glucose?

• Chlorophyll
• Chloroplasts
• Stomata
• Sugar

Plants need ________from the air for photosynthesis

• oxygen
• soil
• carbon dioxide
• sugar

What are the reactants (what's needed) for photosynthesis?

• glucose and oxygen
• light, water, and carbon dioxide
• hydrogen and helium
• ATP and energy