Photosynthesis - CHS 2021

The reactants of photosynthesis are

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

What are the products of photosynthesis?

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

What pigment absorbs sunlight for photosynthesis?

• chloroplast
• thylakoid
• grana
• chlorophyll

Which of the following is the correct equation for PHOTOSYNTHESIS?

• 6CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆
• 6CO₂ + C₆H₁₂O₆ + 6H₂O --> O₂ 
• 6O₂ + 6H₂O --> 6CO₂ + C₆H₁₂O₆
• C₆H₁₂O₆ + 6O₂ ---> 6H₂O + 6CO₂ 

Which gas is removed from the atmosphere during 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, nutrients, and chlorophyll to complete photosynthesis.
• Plants use chlorophyll, water, and carbon dioxide to make sugar.

Plants gather the sun’s energy with light-absorbing pigment molecules called

• chlorophyll
• thylakoids.
• chloroplasts.
• glucose.

What gas is released by plants during photosynthesis?

• sulfur
• carbon dioxide
• oxygen
• hydrogen

Why is photosynthesis important?

• creates oxygen for animals to breath
• creates energy for heterotrophs to use
• creates food for plants to use
• all of these are correct

Which plant structure is extremely necessary for photosynthesis to take place?

• leaves
• flower petals
• anthers
• pistils