EXAM: AQUATIC PEST MANAGEMENT (CATEGORY 5) |
UPDATED QUESTIONS AND CORRECT ANSWERS | JUST
RELEASED
If you want your GPM rate to change a small amount, should you
change the size of your nozzles or the pressure regulator? ---------
CORRECT ANSWER-----------------Pressure for small changes
The age of the fish is determined by
counting the number of wide transparent growth
rings, called ________ ---------CORRECT ANSWER-----------------annuli
Two ways sunfish populations exceed normal rates ---------CORRECT
ANSWER-----------------1. Increased weed cover to hide from predators in
2. Decreased predators
Intensive angling is often an effective form of fish population control.
True or false? ---------CORRECT ANSWER-----------------False
,___________ is often the most effective method for reducing numbers
of unwanted fish in small ponds. ---------CORRECT ANSWER-----------------
Seining
Why should sunfish larger than 6 inches be returned to the water after
seining? ---------CORRECT ANSWER-----------------To select for a faster-
growing trait in the population of fish
Toxic effects of piscicides can be eliminated almost immediately with ---
------CORRECT ANSWER-----------------potassium permanganate (KMnO4)
Piscicides work by interfering with fish _____________
______________ ---------CORRECT ANSWER-----------------cellular
respiration
How do you remove a taste or odor left by piscicide treatment? ---------
CORRECT ANSWER-----------------Treat the water with activated charcoal
,Piscicides are _________________ degraded, so if sunny weather is
predicted, applications should be made early in the morning or late in
the day to allow time for a reaction ---------CORRECT ANSWER--------------
---photochemically
Catfish are _______ susceptible to piscicides than perch ---------
CORRECT ANSWER-----------------less
List the three occasions when you should have available copies of the
labels and MSDS for the pesticides being used (3) ---------CORRECT
ANSWER-----------------1. When products are handled and transported
2. Where products are stored
3. At treatment site
When do most aquatic plants grow best? ---------CORRECT ANSWER------
-----------Late spring-early summer
The bottom of the photic zone is defined as ---------CORRECT ANSWER---
--------------The depth at which light intensity is equivalent to one
percent of full sunlight
, Dominant fish species in waters where phytoplankton and rooted plant
production are high ---------CORRECT ANSWER-----------------Bass,
bluegill, pike
Dominant fish species in waters where phytoplankton and rooted plant
production are low ---------CORRECT ANSWER-----------------Trout, salmon
Temperature is an important factor in determining what characteristics
of aquatic plants? ---------CORRECT ANSWER-----------------Life cycle
How do algae reproduce? (3) ---------CORRECT ANSWER-----------------1.
Cell division
2. Plant fragmentation
3. Spores
Individual algae cells that are suspended on the surface of the water or
form a film ---------CORRECT ANSWER-----------------Planktonic algae