Which of the following is not a greenhouse gas? a) Carbon dioxide (CO2) b) Methane (CH4) c) Nitrogen dioxide (NO2) d) Water vapor (H2O)
c) Nitrogen dioxide (NO2) This is not a greenhouse gas; it's an air pollutant.
15
What is the term for the process of converting atmospheric nitrogen into ammonia, which can be used by plants? a) Denitrification b) Ammonification c) Nitrification d) Nitrogen fixation
d) Nitrogen fixation This process is essential for making nitrogen available to plants.
15
Which of the following soil types typically has the highest water retention capacity? a) Sand b) Silt c) Clay d) Loam
c) Clay. Clay soil has the highest water retention capacity due to its small particle size.
15
What is the term for the practice of using unmanned aerial vehicles (UAVs) equipped with multispectral cameras to capture images of crops?
a) Aerial topography
b) Drone mapping
c) Remote sensing
d) Precision agriculture
a) Mycorrhizae. Mycorrhizal fungi form symbiotic relationships with plant roots, aiding in nutrient uptake.
15
Which of the following is NOT a common method of weed control used in agrotech?
a) Herbicide spraying
b) Biological control
c) Tilling
d) Hydroponic cultivation
b) No-till farming. No-till farming helps to retain soil and prevent erosion by leaving crop residues on the soil surface.
15
In agrotech, what is the primary purpose of a pneumatic planter?
a) Apply pesticides
b) Harvest crops
c) Plant seeds
d) Irrigate fields
c) Preventing soil erosion Windbreaks are rows of trees or shrubs planted to reduce wind erosion.
15
What is the term for the process of converting sugars into ethanol and carbon dioxide by yeast? a) Fermentation b) Oxidation c) Polymerization d) Hydrolysis
Plant seeds
15
What is the term for the practice of using electromagnetic radiation to measure the reflectance of plants and assess their health?
a) Spectroscopy
b) Photogrammetry
c) Radiometry
d) LIDAR
Spectroscopy
15
Which of the following soil types typically has the highest cation exchange capacity (CEC)?
a) Sandy soil
b) Loamy soil
c) Clayey soil
d) Silty soil
Clayey soil
15
What is the primary function of a pyranometer in agrotech?
a) Measure soil moisture levels
b) Monitor atmospheric pressure
c) Assess solar radiation
d) Analyze crop nutrient content
