ISA Arborist Certification Exam questions with correct answers

One way to determine how good the drainage is in a potential planting area is to: A. Test the soil pH B. Use an air excavation device to loosen the soil C. Perform a water percolation test D. Any of the above CORRECT ANSWER C. Perform a water percolation test The major water-conducting cells in angiosperms are the: A. Tracheids B. Fibers C. Parenchyma cells D. Vessels CORRECT ANSWER D. Vessels Carbon sequestration occurs: A. During photosynthesis B. As emissions from vehicles are reduced C. As sunlight combines with air pollution D. As wood decays CORRECT ANSWER A. During photosynthesis Armillaria mushrooms are often an indicator of: A. Poor soil biology B. Stressed trees C. Root decay D. All of the above CORRECT ANSWER D. All of the above