Ms Tyson is awesome
What is the best way to control algae growth in an aquaponics system?
add chemical algaecide / reduce light exposure to fish tanks / increase feeding / remove plants
reduce light exposure
What happens if solids build up in the grow bed?
plants grow faster / water flow improves / anaerobic zones develop / oxygen levels rise
anaerobic zones develop
What is biosecurity in aquaponics?
protecting systems from pests and disease / securing food storage / locking tanks / adding extra fertilizer
protecting systems from pests and disease
Which of the following contributes most to water evaporation?
aeration / shading / covering tanks / lowering pH
aeration
What should you do before adding new fish to an existing system?
add fertilizer / drain the tank and start over / feed more / test and adjust water quality
test and adjust water quality
Which of the following is an example of biological filtration?
gravel trap / bio media with bacteria / uv sterilizer / mechanical screen
bio media w bacteria
What is the ideal range for total ammonia nitrogen (TAN)?
0-1 ppm / 2-4 ppm / 5-7 ppm / 8-10 ppm
0-1 ppm
How often should you check fish behavior for signs of stress or disease?
weekly / daily / monthly / every feeding cycle
daily
What is the purpose of a clarifier?
store fish food / remove solid waste particles /
add nutrients / test pH
remove solid waste particles
What happens if you overfeed fish in aquaponics?
fish grow faster / excess food decays and pollutes the water / plants grow better / oxygen levels increase
excess food decays and pollutes the water
Which of these would be a symptom of low potassium levels in plants?
browning leaf edges / curled leaves / purple veins / white leaf spots
browning leaf edges
What is one major reason bacteria are critical in aquaponics?
they eat algae / they convert toxic compounds to plant nutrients / they feed the fish / they clean plant roots manually
They convert toxic compounds to plant nutrients
What is the process of producing energy from sunlight?
photosynthesis / respiration / nitrification / decomposition
photosynthesis
What tool is used to measure dissolved oxygen?
thermometer / DO meter / refractometer / pH probe
DO meter
Which part of the plant absorbs nutrients and water?
leaves / stems / roots / flowers
roots
How should fish be acclimated to a new system?
dump them in immediately / float the bag to equalize temps / add ice / feed them first
float the bad to equalize temps
How can you lower water temperature if it becomes too hot?
add cold water or increase shade / add more plants / slow down aeration / add more fish
add cold water or increase shade
The bacteria that convert nitrite into nitrate are
nitrobacter / nitrosomas / cyanobacteria / e coli
nitrobacter
What is true about bacteria?
they require oxygen to perform nitrification / they prefer dark anaerobic zones / they live only in the grow bed / they compete with plants for nutrients
they require oxygen to perform nitrification
What does "denitrification" refer to?
conversion of nitrate to nitrogen gas / conversion of ammonia to nitrate / conversion of nitrite to nitrate / conversion of iron to rust
conversion of nitrate to nitrogen gas
Which of the following can cause fish stress?
stabel pH / high ammonia / proper feeding / clean water
high ammonia
What is the most common sign of nutrient deficiency in plants?
curling leaves / yellowing leaves / brown stems / dropping flowers
yellowing leaves
What is the ideal water temperature range for lettuce?
40-50F / 55-70F / 75-85F / 90F+
55-70F
A plant turning light green or yellow between the leaf veins most likely needs more:
nitrogen / iron / calcium / oxygen
iron
What is one key advantage of aquaponics for education?
it only teaches biology / it demonstrates real-world science integration / it replaces the need for chemistry / it requires minimal maintenance
it demonstrates real-world science integration