Photosynthesis Concepts and Processes

The video explains how trees increase their weight by absorbing carbon dioxide from the air, rather than from soil or water. This process is part of photosynthesis, where plants use sunlight, water, and carbon dioxide to produce sugars and oxygen. Photosynthesis consists of two main stages: the photo stage, where light is captured and stored, and the synthesis stage, where sugar molecules are built. The video highlights the importance of photosynthesis in plant growth and oxygen production.

Where does most of the new material in a growing plant come from?

• An invisible gas in the air

• Sunlight

• Water

• The soil

What are the main components plants use in photosynthesis?

• Carbon dioxide, sunlight, and water

• Oxygen, soil, and water

• Sunlight, oxygen, and soil

• Water, soil, and carbon dioxide

What is a byproduct of photosynthesis that is crucial for animal life?

• Oxygen

• Carbon dioxide

• Water

• Sugar

In the photo segment of photosynthesis, what happens to water molecules?

• They are converted into sugar

• They are split to produce oxygen

• They are absorbed by the roots

• They evaporate into the air

What is the main purpose of the synthesis segment in photosynthesis?

• To split water molecules

• To release oxygen

• To capture sunlight

• To build sugar molecules

What are the outputs of photosynthesis?

• Sunlight and water

• Carbon dioxide and sugar

• Oxygen and sugar

• Water and oxygen

Which of the following is not an input for photosynthesis?

• Sunlight

• Water

• Carbon dioxide

• Oxygen

What role does sunlight play in photosynthesis?

• It provides energy for the process

• It splits water molecules

• It is a byproduct of the process

• It is used to build sugar molecules