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Quiz 5: Bees and Pesticides
1. Do most insecticides kill bees?
Yes
No
Only larvae in nests
Only social bees
2. How can you avoid killing pollinators when you spray insecticides?
Spray in the evening when bees are not foraging
Spray leaves, not flowers
Use contact insecticides
All of the above
3. Why are systemic insecticides toxic to bees?
The insecticides are translocated from the soil to nectar and pollen in flowers
The plant increases the toxicity of the insecticide
The plant stops producing pollen and nectar and starves bees
The plant stops growing
4. What are signs of insecticide toxicity to bees?
Rapid movement
Trembling
No movement
5. Why are the names of systemic insecticides?
Imidacloprid
Clothianidin
Thiamethoxam
6. The LD 50 means the dose of the insecticide that kills 50% of the animal population that it is tested on. A low number indicates that the insecticide is:
Not toxic
Very toxic
Has acute effects
Has chronic effects
7. Where do I find out the kind of insecticide used in a product?
Look for the words 'active ingredient' or 'A.I.' on the label
Look for the the kind of insect that is killed by the insecticide
Look for the directions for use
Look for the application rate
8. What is a contact insecticide?
It kills by contacting the insect when it walks on the plant where the insecticide was sprayed
It kills when the insect eats the leaves where it was sprayed
It kills when the insect sits on the plant
9. Are organic insecticides non-toxic to bees?
Not necessarily
Yes, they are always non-toxic
There is no such thing as an organic insecticide
Only when applied during foraging
10. Which insecticide will not kill foraging bees when sprayed on leaves?
Spinosad active ingredient
Imidacloprid active ingredient
Carbaryl active ingredient
Bifenthrin active ingredient
Score = Correct answers: Free JavaScripts provided by The JavaScript Source
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