Which biotic factor could affect the growth of a plant seedling?

• A. Amount of sunlight available
• B. Competition with neighboring plants for resources
• C. Temperature fluctuations
• D. Soil pH level

Answer: (B)

Verified step by step guidance

1. Understand the concept of biotic factors: Biotic factors are living components of an ecosystem that can influence the growth, survival, and reproduction of organisms. Examples include competition, predation, and symbiotic relationships.
2. Identify the options provided in the problem: The options include 'Amount of sunlight available,' 'Competition with neighboring plants for resources,' 'Temperature fluctuations,' and 'Soil pH level.'
3. Differentiate between biotic and abiotic factors: Abiotic factors are non-living components of the environment, such as sunlight, temperature, and soil pH. Biotic factors involve interactions with other living organisms, such as competition or predation.
4. Analyze the option 'Competition with neighboring plants for resources': This is a biotic factor because it involves living organisms (neighboring plants) competing for resources like water, nutrients, and space, which can directly affect the growth of a plant seedling.
5. Conclude that the correct answer is 'Competition with neighboring plants for resources,' as it is the only biotic factor listed that could affect the growth of a plant seedling.