🌲Forestry MCQs
Forestry MCQs
498 MCQs481
The largest known petrified tree is one of Sequoiadendron giganteum with a ______ trunk, near Coaldale, Nevada, U.S.A.
A79.5m
B89.9m (295 ft)
C99.5 m
DNone of these
482
The oldest known living tree is the Bristlecone pine named “Methusela” at 3050 m (10,000 ft) in the ________ , confirmed as 4700 years old:
ACalifornia
BWashington
CNew York
DNone of these
483
The change is brought about by such individual and population factors is:
ABirth rate
BMorality
CImmigration
DEmigration E. All of the above
484
Windbreaks/shelterbelts cover:
A& (
BD. None of these
CBoth (
485
The kind of windbreak is:
A& (
BD. None of these
CBoth (
486
How windbreaks functions is:
AThe air is baffled and mixed as it hits the wind breaks
BCausing a disruptive turbulence patterns which spoils the energy and velocity of the wind
CThis mixing and churning continues as the pressure gradient is built by the windbreak and the air leaks through or rolls over the top of the screen
DAll of the above
487
The best windbreaks approach is 100% crown density in the low-profile shurb, rows, and _____ density in the tall rows:
A50%
B60%
C70%
D80%
488
In Pakistan, because of small field size, most often 2 or 3 rows windbreaks are used, and should expect the effects to reach only about 12H downwind and _____ upwind:
A1H
B2H
C3H
D4H
489
A windbreak with 50% crown density is more effective than one of either 100% or of ______ density:
A15%
B20%
C25%
D30%
490
The major types of mulching are:_________?
AArtificial mulches
BNatural inorganic mulches
CStone mulch
DOrganic mulches E. All of the above