Understanding Photosynthesis

What is the primary role of photosynthesis on Earth?

• To produce carbon dioxide

• To liberate oxygen and consume carbon dioxide

• To create fossil fuels

• To generate electricity

Elijah is working on a science project about increasing crop yields. He learns that scientific research into photosynthesis can help increase the yields of which of the following?

• Metals

• Fiber, wood, and fuel

• Plastics

• Electronics

The energy-harvesting secrets of plants can be adapted to man-made systems to provide new ways to collect and use _______.

• wind energy

• solar energy

• geothermal energy

• tidal energy

Understanding photosynthesis is vital for controlling the makeup of our _______.

• oceans

• atmosphere

• mountains

• forests

Which of the following is a major energy-harvesting process in plants?

• Photosynthesis

• Respiration

• Fermentation

• Combustion

Fill in the blank: Ethanol is produced from sugars and starches by _______.

• Photosynthesis

• Fermentation

• Combustion

• Respiration

The increase in carbon dioxide and related gases is bound to affect our atmosphere. Will this change be large or small, and will it be harmful or beneficial? These questions are being actively studied by many scientists today. True or False?

• True

• False

The process of photosynthesis is essential for our quality of life and existence. True or False?

• True

• False

Fill in the blank: Modern molecular biology has _______ the process of developing new plant varieties.

• Slowed down

• Sped up

• Halted

• Reversed

What is the main theme of the conclusion section?

• The importance of photosynthesis research

• The dangers of photosynthesis

• The history of photosynthesis

• The economic impact of photosynthesis