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CA BRANCH 3 STRUCTURAL PEST CONTROL EXAM 195 QUESTIONS & ANSWERS 100% CORRECT!!
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CA BRANCH 3 STRUCTURAL PEST CONTROL EXAM 195 QUESTIONS & ANSWERS 100% CORRECT!!
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CA BRANCH 3 STRUCTURAL PEST CONTROLEXAM 195 QUESTIONS & ANSWERS 100%
CORRECT!!
How can you tell the difference between wood suffering from brown rot and
wood suffering from white rot? 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.
What is the difference between the stains caused by stain (sapstain) fungi vs.
mold fungi? 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.
How can you distinguish between winged termites and winged ants? 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.
, Name the four basic castes of termites. Describe the basic function(s) of each
caste. Answer - Workers - gather food, maintain the galleries, tend the young,
and groom the other termites.
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.
Do subterranean termites live entirely within wood? Why or why not? 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.
How do subterranean termites most often infest wood in buildings? 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
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.
Describe the frass pellets of drywood termites. Answer - They are small and
cylindrical with six depressions on the sides. These pellets are unique to
drywood termites and are used for identification.
Where do drywood termites most often occur? Answer - In southern Florida,
southern California, and along the southern gulf coast of the United States.
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