Photosynthetic Organisms

What is the primary purpose of photosynthesis in organisms?

• Production of oxygen

• Conversion of solar energy into chemical energy

• Synthesis of proteins

• Generation of heat energy

Why are photosynthetic organisms called autotrophs?

• They produce their own food

• They feed on other organisms

• They consume carbohydrates

• They rely on external energy sources

Approximately how much sugar do all the world's green organisms produce annually?

• 100,000 to 500,000 metric tons

• 500 million to 1 billion metric tons

• 100 billion to 200 billion metric tons

• 1 trillion to 2 trillion metric tons

What term collectively refers to organisms reliant on produced organic molecules?

• Consumers

• Autotrophs

• Heterotrophs

• Decomposers

What role does oxygen, produced during photosynthesis, play in the atmosphere?

• Traps carbon dioxide

• Forms a layer of carbon

• Creates a layer of ozone shielding from UV radiation

• Acts as a fuel for vehicles

How does the energy within oil and coal relate to photosynthesis?

• It originates from the core of the Earth

• It is directly absorbed from sunlight

• It was captured by plants and algae millions of years ago

• It is produced during cellular respiration

Apart from energy and oxygen, what are some other products of photosynthesis mentioned in the passage?

• Plastics and metals

• Building materials, fabrics, and pharmaceuticals

• Electronics and computers

• Minerals and rocks