HRT 221 FINAL EXAM QUESTIONS WITH ANSWERS
100% CORRECT
Which of the following is an advantage of
subirrigation systems:
a. energy efficiency
b. more runoff
c. labor efficiency
d. improved leaching
e. none of the above - ANSWER c. labor efficiency
Which of the following is an accurate statement
describing localized unit heaters versus central
heating from a boiler?
a. localized costs less to install than central
b. localized heating systems have fewer options
for fuel than central heat systems
c. central heat systems usually provide more
uniform heat distribution
d. it is easier to heat at or below crop level with
central systems
, e. all of the above - ANSWER e. all of the above
Improperly vented heaters and poor performing
heaters can:
a. cause ethylene damage to crops
b. cause oxygen levels to increase
c. cause low carbon dioxide levels
d. all of the above
e. none of the above - ANSWER a. cause ethylene damage to crops
Circulation of air in the greenhouse can be
accomplished by:
a. opening ridge or eave vents
b. using horizontal air flow fans
c. turning on exhaust fans
d. using a fan jet with perforated convection
tubes
e. b and d - ANSWER e. b & d
Greenhouse glazing refers to:
a) diffuse glass
, b) thermal radiation
c) greenhouse covering
d) shattering of fiber glass
e) shattering of acrylic - ANSWER c. greenhouse covering
The advantages of diffuse light are best realized in:
a. spring
b. summer
c. fall
d. none of the above
e. all of the above - ANSWER e. all of the above
The weight of hanging baskets on the structure is an example of the:
a. dead load
b. live load
c. snow load
d. can't tell
e. a and b - ANSWER b. live load
The "gothic" roof shape is now more common
than the "quonset" roof shape in Michigan
100% CORRECT
Which of the following is an advantage of
subirrigation systems:
a. energy efficiency
b. more runoff
c. labor efficiency
d. improved leaching
e. none of the above - ANSWER c. labor efficiency
Which of the following is an accurate statement
describing localized unit heaters versus central
heating from a boiler?
a. localized costs less to install than central
b. localized heating systems have fewer options
for fuel than central heat systems
c. central heat systems usually provide more
uniform heat distribution
d. it is easier to heat at or below crop level with
central systems
, e. all of the above - ANSWER e. all of the above
Improperly vented heaters and poor performing
heaters can:
a. cause ethylene damage to crops
b. cause oxygen levels to increase
c. cause low carbon dioxide levels
d. all of the above
e. none of the above - ANSWER a. cause ethylene damage to crops
Circulation of air in the greenhouse can be
accomplished by:
a. opening ridge or eave vents
b. using horizontal air flow fans
c. turning on exhaust fans
d. using a fan jet with perforated convection
tubes
e. b and d - ANSWER e. b & d
Greenhouse glazing refers to:
a) diffuse glass
, b) thermal radiation
c) greenhouse covering
d) shattering of fiber glass
e) shattering of acrylic - ANSWER c. greenhouse covering
The advantages of diffuse light are best realized in:
a. spring
b. summer
c. fall
d. none of the above
e. all of the above - ANSWER e. all of the above
The weight of hanging baskets on the structure is an example of the:
a. dead load
b. live load
c. snow load
d. can't tell
e. a and b - ANSWER b. live load
The "gothic" roof shape is now more common
than the "quonset" roof shape in Michigan
