CR-21 Landscapes and Irrigation exam questions with answers,

CR-21 Landscapes and Irrigation
exam questions with answers


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


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 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


B. the leaves




Which of the following species include both evergreen
and deciduous varieties?


A. cypress


B. maple

,C. oak


D. pine


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


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


B. Stops insects




If a contractor is in willful violation of Arizona Blue Stake ,
what is the maximum fine?


A. $5000.00


B. $500.00