Which factor do trees primarily compete for in order to obtain energy through photosynthesis?

• A. Water
• B. Sunlight
• C. Nitrogen
• D. Carbon dioxide

Answer: (B)

Verified step by step guidance

1. Understand the process of photosynthesis: Photosynthesis is the process by which plants, including trees, convert light energy into chemical energy stored in glucose. This process requires sunlight, water, and carbon dioxide.
2. Identify the primary energy source for photosynthesis: Sunlight is the key energy source that drives the photosynthetic reactions. Without sunlight, the process cannot occur.
3. Analyze the role of water, carbon dioxide, and nitrogen: Water and carbon dioxide are raw materials used in photosynthesis, but they are not the energy source. Nitrogen is essential for plant growth but is not directly involved in photosynthesis.
4. Recognize the competition among trees: In dense forests, trees compete for sunlight because taller trees can block sunlight from reaching shorter ones, making sunlight the primary factor for energy acquisition.
5. Conclude that sunlight is the correct answer: Trees primarily compete for sunlight to obtain energy through photosynthesis, as it is the driving force behind the process.