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BRANCH 3 STRUCTURAL PEST CONTROL
NEWEST ACTUAL EXAM COMPLETE 250
QUESTION AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A
Question : How can you tell the difference between wood
suffering from brown rot and wood suffering from white rot?
CORRECT ANSWER : Wood infested with brown rot
typically:
• appears dark brown, • shows excessive shrinkage, • develops cross-grain cracking, and • can be crushed easily to form a brownish powder.
Wood infested with white rot on the other hand, often:
• appears whiter than normal, • shows normal shrinkage, • does not crack across the grain, • is spongy to the touch.
Question : What is the difference between the stains caused by
stain (sapstain) fungi vs. mold fungi?
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CORRECT ANSWER : Sapstain fungi live on the starch in
wood cells. These fungi may discolor the sapwood entirely or in patches. This stain is deep within the wood and cannot be removed by brushing or planing.On the other hand, discoloration caused by mold fungi is superficial. This means that you can usually remove the discoloration by brushing or planing. However, on hardwoods with open pores (very large and visible vessels) such as the oaks, the surface molds may cause stains that are too deep to remove easily.
Question : How can you distinguish between winged termites
and winged ants?
CORRECT ANSWER : Look at their antennae, waists, and
wings. Winged termites have straight antennae, thick waists, and wings that are equal in size and shape. Winged ants have bent antennae, narrow waists, and forewings that are larger than the hind wings.
Question : Name the four basic castes of termites. Describe the
basic function(s) of each caste.
CORRECT ANSWER : Workers - gather food, maintain the
galleries, tend the young, and groom the other termites.
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Soldiers - guard the colony against predators.Primary reproductives - "swarmers" that fly out of their colonies to start new colonies of their own. They are the future kinds and queens of new colonies.Secondary reproductives - supplement egg production in the presence of the king and queen and can take over the egg laying if the queen dies or begins to fail.
Question : Do subterranean termites live entirely within wood?
Why or why not?
CORRECT ANSWER : No, because they require a constant
source of moisture to survive. However, they can live in wood with less than 20% moisture by getting their moisture from the ground. They transport this moisture through flattened, earthen shelter tubes that serve as passageways from the soil to the infested wood.
Question : How do subterranean termites most often infest wood
in buildings?
CORRECT ANSWER : They gain entry through untreated
wood that touches or is close to the ground, particularly at porches, steps, and terraces. They can also infest buildings
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through cracks or voids in foundations or concrete floors that make it easy for termites to reach wood that is not close to the soil.
Question : Describe the frass pellets of drywood termites.
CORRECT ANSWER : They are small and cylindrical with six
depressions on the sides. These pellets are unique to drywood termites and are used for identification.
Question : Where do drywood termites most often occur?
CORRECT ANSWER : In southern Florida, southern
California, and along the southern gulf coast of the United States.
Question : Do drywood termites live entirely within wood? Why
or why not?
CORRECT ANSW ER: Yes, because they require little
moisture (wood MCs as low as 5%). Unlike subterranean termites, drywood termites have no connection with the soil.
Question : List several ways you can protect wood from
termites.