1|Page
CR-21 LANDSCAPES AND IRRIGATION AZROC EXAM
QUESTION BANK EXAM NEWEST 2026 ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALL ANSWERED
{1435 Q & A} ALREADY GRADED A+/ CR21
LANDSCAPES AND IRRIGATION AZROC TEST PREP |
BRAND NEW! | 100% GUARANTEED PASS
What determines the size of the pipe used in a sprinkler system?
A. How tall the grass is
B. How far the run is from the water source
C. How many circuit there are
D. How many GPM is needed to flow through it - ✔✔✔ Correct Answer >
D. How many GPM is needed to flow through it
Matching Water Flow and Pressure with Pipe Size To select and
specify the most suitable pipe, the irrigation system designer
must know the amount of water demanded by the sprinkler
heads that are downstream from each section of pipe.
What is the purpose of Humus?
,2|Page
A. To Replace Sulfur
B. To aid in compaction
C. To increase water retention
D. To decrease water retention - ✔✔✔ Correct Answer > C. To increase
water retention
What best describes foliage on trees?
A. the leaves, branches and the trunk
B. the leaves
C. the leaves and branches
D. the flowers on the tree - ✔✔✔ Correct Answer > B. the leaves
Which of the following species include both evergreen and
deciduous varieties?
A. cypress
B. maple
C. oak
,3|Page
D. pine - ✔✔✔ Correct Answer > C. oak
What should be provided as a cover for the drain tile before
installing the pond liner where a subdrain is used?
A. 4 inches of pea gravel
B. a pool grate
C. screen with a 1/4 inch mesh
D. 8 inches of medium sized rock - ✔✔✔ Correct Answer > A. 4 inches
of pea gravel
The use of mulch on new plants does all except?
A. Control Temperature fluctuations
B. Stops insects
C. Discourages weed growth
D. Aid in water retention - ✔✔✔ Correct Answer > B. Stops insects
If a contractor is in willful violation of Arizona Blue Stake , what
is the maximum fine?
, 4|Page
A. $5000.00
B. $500.00
C. $250.00
D. $300.00 - ✔✔✔ Correct Answer > A. $5000.00
Arizona law (A.R.S. 40-360.21-32) says underground utilities must
be marked before any type of excavation by anyone, including
professional excavators, homeowners and anyone else whose
work disrupts the subsurface of the earth. This law is enforced
by the Arizona Corporation Commission (ACC) who can issue
citations for civil penalties of up to $5,000 per violation.
Which finish is best used when subject to regular dampness?
A. Putty finish
B. Sand finish
C. Portland cement Plaster finish
D. Keenes cement finish - ✔✔✔ Correct Answer > C. Portland cement
Plaster finish
What does the color green indicate?
CR-21 LANDSCAPES AND IRRIGATION AZROC EXAM
QUESTION BANK EXAM NEWEST 2026 ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED
ANSWERS (VERIFIED ANSWERS) ALL ANSWERED
{1435 Q & A} ALREADY GRADED A+/ CR21
LANDSCAPES AND IRRIGATION AZROC TEST PREP |
BRAND NEW! | 100% GUARANTEED PASS
What determines the size of the pipe used in a sprinkler system?
A. How tall the grass is
B. How far the run is from the water source
C. How many circuit there are
D. How many GPM is needed to flow through it - ✔✔✔ Correct Answer >
D. How many GPM is needed to flow through it
Matching Water Flow and Pressure with Pipe Size To select and
specify the most suitable pipe, the irrigation system designer
must know the amount of water demanded by the sprinkler
heads that are downstream from each section of pipe.
What is the purpose of Humus?
,2|Page
A. To Replace Sulfur
B. To aid in compaction
C. To increase water retention
D. To decrease water retention - ✔✔✔ Correct Answer > C. To increase
water retention
What best describes foliage on trees?
A. the leaves, branches and the trunk
B. the leaves
C. the leaves and branches
D. the flowers on the tree - ✔✔✔ Correct Answer > B. the leaves
Which of the following species include both evergreen and
deciduous varieties?
A. cypress
B. maple
C. oak
,3|Page
D. pine - ✔✔✔ Correct Answer > C. oak
What should be provided as a cover for the drain tile before
installing the pond liner where a subdrain is used?
A. 4 inches of pea gravel
B. a pool grate
C. screen with a 1/4 inch mesh
D. 8 inches of medium sized rock - ✔✔✔ Correct Answer > A. 4 inches
of pea gravel
The use of mulch on new plants does all except?
A. Control Temperature fluctuations
B. Stops insects
C. Discourages weed growth
D. Aid in water retention - ✔✔✔ Correct Answer > B. Stops insects
If a contractor is in willful violation of Arizona Blue Stake , what
is the maximum fine?
, 4|Page
A. $5000.00
B. $500.00
C. $250.00
D. $300.00 - ✔✔✔ Correct Answer > A. $5000.00
Arizona law (A.R.S. 40-360.21-32) says underground utilities must
be marked before any type of excavation by anyone, including
professional excavators, homeowners and anyone else whose
work disrupts the subsurface of the earth. This law is enforced
by the Arizona Corporation Commission (ACC) who can issue
citations for civil penalties of up to $5,000 per violation.
Which finish is best used when subject to regular dampness?
A. Putty finish
B. Sand finish
C. Portland cement Plaster finish
D. Keenes cement finish - ✔✔✔ Correct Answer > C. Portland cement
Plaster finish
What does the color green indicate?
