Certified Arborist Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the most important factor in the survival of newly planted trees?

Available sunlight

Soil pH levels

Water stress

The survival of newly planted trees is highly dependent on water availability, making water stress the most critical factor. Newly planted trees often have insufficient root systems to access moisture deep within the soil, making them particularly vulnerable to drought conditions. Proper watering is essential for establishing robust root systems, promoting growth, and ensuring overall health.

Other factors, such as available sunlight, soil pH levels, and wind direction, also play important roles in the survival and growth of trees. However, without adequate water, even the best growing conditions can lead to stress, stunted growth, or tree mortality. Adequate moisture supports the vital processes of photosynthesis and nutrient uptake, which are crucial for a tree's establishment and long-term survival.

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Wind direction

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