Certified Arborist Exam Enhance Your Tree Care Expertise dumps Pdf

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2. Latest Version: 6.0 Question: 1 Which of the following devices is used to prevent excessive wear to a cable that is attached to anchoring hardware? A.Cable aid B.Lag hook C.Ship auger D.Thimble Answer: D Explanation: A thimble is used to prevent excessive wear to a cable that is attached to anchoring hardware. The thimble can also be used to protect the termination loop of the cable, or, when it is used with rope, to increase the bend radius. A cable aid is a tool used to tighten lag screws, open steel thimbles, and wrap dead-end grips. A lag hook, otherwise known as a J-hook, is a lag-threaded cable anchor that has an open eye. A ship auger is a type of drill bit that is shaped like an open spiral. Arborists use these types of bits when drilling holes for bracing or cable installation. Question: 2 Which of the following is NOT an adverse consequence of lion tailing? A.Water sprouts B.Sunburned bark C.Barber chair D.Weak branches Answer: C Explanation: Barber chair is not an adverse consequence of lion tailing. However, lion tailing may lead to water sprouts, sunburned bark, or weak branches. A water sprout is a shoot that grows epicormically from latent buds on the trunk or branches. Sunburn is caused by heat damage on thin or juvenile bark that has been exposed to direct sun rays. When inner branches of trees are excessively pruned the upper side of branches can be newly exposed to sunlight causing sunburn. Lions tailing can also cause branches to develop with poor taper and make them more likely to fail from structural weakness. Question: 3 Visit us athttps://www.certsgrade.com/pdf/certified-arborist/

3. If a branch is tip-tied, which section will fall away from the cut? A.Tip end B.Butt end C.Middle D.It is impossible to predict. Answer: B Explanation: If a branch is tip-tied, the butt end will fall away from the cut. Tip-tying is the technique of tying a line at the tip end of the limb that is to be removed. The extent to which the branch will swing out is largely dependent on where the rigging point is positioned. Climbers should be careful when tip-tying to avoid the path through which the swinging limb is likely to fall. In some cases, the arborist will tip-tie the branch and have a ground person lift it off the cut with mechanical advantage so that it will not impact a target located below the climber. Question: 4 Mycorrhizae are the beneficial relationships between tree roots and A.grasses. B.fungi. C.insects. D.mulch. Answer: B Explanation: Mycorrhizae are the beneficial relationships between tree roots and fungi. This sort of mutually advantageous relationship is called symbiosis. Mycorrhizae may be either ectotrophic or endotrophic, depending on whether the fungus lives inside or outside the root, respectively. Mycorrhizae are important for trees because they increase the area through which minerals (especially phosphorus) may be absorbed. Fungi benefit by absorbing carbohydrates from the plant tissues. Question: 5 In which of these pruning techniques does the arborist cut the branch back to a relatively weak point? A.Heading cut B.Undercut C.Reduction cut D.Topping Answer: A Visit us athttps://www.certsgrade.com/pdf/certified-arborist/

4. Explanation: In a heading cut, the arborist cuts the branch back to a relatively weak point. A heading cut, also known as heading back the branch, is the process of cutting the shoot for the branch back to the buds, stubs, or the closest lateral branch that cannot assume dominance. A heading cut may also be made on older trees where avoiding a large wound on the trunk may be an objective. A reduction cut is a pruning technique that takes the branch or stem back to a lateral branch that is big enough to be apically dominant. Topping is the practice of cutting a tree back to stubs, internodes, buds, or lateral branches that are not great enough to assume apical dominance. Question: 6 Which of the following tools should only be used for connectors that seldom need to be opened? A.Carabiners B.Clevises C.Shackles D.Screw links Answer: D Explanation: Screw links should only be used for connectors that seldom need to be opened. A carabiner is an oblong metal ring that opens or closes with a spring-loaded gate. Carabiners can be used in both dynamic and static rigging. A clevis is a fitting that is shaped like a U and has a pin running through it. A screw link is a connecting device that has a threaded closure mechanism. It is used to quickly attach branches to rigging lines or various climbing and rigging componentry together. Question: 7 What would be the bend ratio of a rigging system with blocks if the diameter of the pulley is three times the size of the diameter of the rope? A.3:1 B.2:1 C.1:3 D.1:1 Answer: A Explanation: If the diameter of the pulley is three times the size of the diameter of the rope, the bend ratio of the rigging system with blocks is 3:1. The bend ratio is the relationship between the diameter of a branch or sheave to the diameter of the rope wrapped around it. It is important for the bend ratio of a rigging system with blocks to be at least 4:1, because an excessively large rope for a given pulley can lead to rope and block damage. Visit us athttps://www.certsgrade.com/pdf/certified-arborist/

5. Question: 8 What is the primary purpose of wound dressing? A.Protect against disease B.Reduce decay C.Prevent insect infestation D.Improve appearance Answer: D Explanation: The primary purpose of wound dressing is to improve appearance. Formerly, wound dressings were used to prevent decay and the introduction of diseases, but many of these claims have been found to be unsubstantiated. Some evidence shows that using certain wound coverings may help prevent the detection of wounds by opportunistic insects that spread oak wilt, but further research is necessary to support these claims. For this reason, wound dressings are only rarely used at present and almost entirely to improve the appearance of the tree. When an arborist does elect to use a dressing, he or she should ensure that the substance will not damage the tree and that it is applied lightly. Question: 9 Using ropes and other equipment to remove limbs or bring down entire trees is known as A.notching. B.landing. C.shock-loading. D.rigging. Answer: D Explanation: Using ropes and other equipment to remove limbs or bring down entire trees is known as rigging. Notching is cutting a wedge into tree trunk or branch before preforming a back cut to complete the cut. Landing is the lowering of branches to the ground. Arborists should establish a landing zone near the tree. This will be the area where large branches and foliage are to land during removal. Shock-loading is the sudden application of a dynamic force on the rope or rigging equipment when a moving load is stopped abruptly. Question: 10 At which of the following soil pH levels would iron be most available to plants? A.5 Visit us athttps://www.certsgrade.com/pdf/certified-arborist/

6. B.6 C.7 D.8 Answer: A Explanation: Of the given soil pH levels, iron would be most available in soil with a pH of 5. The optimal pH range for absorption varies for different elements. However, all of the major elements are available in sufficient amounts when the soil pH is between 6 and 7.5. For soil, the essential elements are nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, boron, copper, zinc, and molybdenum. Elements are defined as essential when they are required for the tree's development or metabolism. Visit us athttps://www.certsgrade.com/pdf/certified-arborist/

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