Factors Affecting Photosynthesis and Maximizing Plant Growth

The video tutorial explains how photosynthesis is influenced by light intensity, temperature, and carbon dioxide concentration. It discusses how these factors can limit photosynthesis in different zones and how greenhouse conditions can be optimized to enhance plant growth. The inverse square law is introduced to explain the relationship between light intensity and distance, with a practical example calculation.

Which factor is the limiting factor for photosynthesis in zone one?

• Temperature

• Light intensity

• Carbon dioxide concentration

• Water availability

What is the limiting factor for photosynthesis in zone two?

• Light intensity

• Temperature

• Carbon dioxide concentration

• Soil nutrients

How can farmers increase carbon dioxide concentration in a greenhouse?

• Opening windows

• Adding carbon dioxide to the atmosphere

• Using fans

• Using artificial lights

What economic factor must farmers consider when changing greenhouse conditions?

• The type of soil used

• The balance between increased crop yields and costs

• The size of the greenhouse

• The color of the plants

According to the inverse square law, how does light intensity change with distance?

• It remains constant regardless of distance

• It doubles with every meter of distance

• It increases linearly with distance

• It is inversely proportional to the square of the distance