FREE Certified Arborist MCQ Questions And Answers
What is the main function of a dressing for a wound?
The improvement of appearance is the main goal of wound dressing. In the past, wound dressings were used to stop deterioration and the spread of illnesses, however many of these claims have now been disproven.
Which condition is an abiotic disorder?
An abiotic disorder is girdling roots. Abiotic simply means nonliving. Roots that encircle and squeeze one another are what cause girdling roots. Weak vegetative development on the lateral branches along one side of the tree is a typical indicator of girdling roots. The xylem becomes discolored as a result of vascular wilt disease. When a condition called vascular wilt affects the flow of water and nutrients, the tree eventually dies. Some of the small roundworms known as nematodes eat plant tissues. Arachnids called mites occasionally dwell on and eat plant parts. A plant's galls may develop reproductive structures as a result of mites, or they may suck fluid from the leaves and stems.
Using ropes and other tools to cut off branches or bring down entire trees is referred to as
Rigging is the process of removing branches from trees or bringing them down entirely using ropes and other tools. Cutting a wedge into a branch or tree trunk before performing a reverse cut to complete the cut is known as notching. Branches are lowered to the earth during landing. Arborists ought to create a landing area close to the tree. Large branches and leaves are expected to fall in this area during removal. When a moving load is quickly stopped, shock-loading refers to the sudden application of a dynamic force on the rope or rigging apparatus.
Which of the following branches would props work best for?
A large branch that grows parallel to the ground would benefit most from propping. As the name implies, propping is the insertion of sturdy supports between a branch and the ground. When removing a branch is neither possible or desirable yet there is danger that it might fall onto something or the ground, this procedure is used. Concrete, metal, and wood have all been utilized to make functional props, hence there is no established standard for prop construction. Simply said, the arborist must make sure that the material is sturdy enough to support the branch and that, once installed, the prop will require only minimal maintenance. Furthermore, the prop should not in any manner limit the further expansion. Simply making sure that the material will be sturdy enough to support the branch and that the prop will need enough upkeep after it is in place are all that the arborist needs to do. Additionally, the prop must not in any way impede the branch's future growth. The prop's top ought to include some sort of divot or scoop that secures the branch while allowing it to develop. Usually, the support for the prop will be strengthened by being buried in the ground, but caution should be used to prevent damaging the roots.
How deep of a notch should be made while felling a tree in general?
Generally speaking, the initial notch made when felling a tree shouldn't be larger than one-third of its diameter. On the other hand, the hinge should be around four-fifths the diameter of the tree long. An initial notch is followed by a back cut while felling a tree. Arborists will employ open-face, Humboldt, and standard notches. A deeper cut extends the arborist's ability to manipulate the tree. Because solid fiber makes for a much superior hinge, the arborist should strive to avoid placing the notches anywhere near rot or fissures. Additionally, when making the cuts, the arborist should avoid cutting through the notch's apex because doing so could damage the fibers that are crucial for controlling the hinge.
Which of the following soil pH ranges would provide for the greatest availability of iron to plants?
Given the range of soil pH values, soil with a pH of 5 would have the highest availability of iron. various elements have various optimum pH ranges for absorption. However, when the soil pH is between 6 and 7.5, all of the key elements are present in appropriate levels. Nitrogen, phosphorus, potassium, sulfur, calcium, magnesium, iron, manganese, boron, copper, zinc, and molybdenum are the fundamental components for soil. When an element is necessary for the growth or metabolism of a tree, it is said to be essential.
In terms of rope, a rigging line's one cycle is defined as
One lift or one descent constitutes one cycle for a rigging line in terms of rope. Cycles are used to determine how much a rigging line has worn. In particular, the number of cycles to failure can be used to gauge a rope's durability. No matter how carefully the rope is kept up, each use wears it out. Poorly maintained or unclean rope will deteriorate much more quickly. A rope may break long before it reaches the number of cycles before failure.