UPDATED 2025/2026 test WITH
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1. What are examples of plant diseases? - ANSWER ✔
Fungi,Oomycetes,Bacteria,Viroids,
2. What is the difference between simple metamorphosis and
complete metamorphosis - ANSWER ✔ Simple Metamoph. is 3
stages egg, nymph, and adult. gradual change. Complex
Metamorph. 4 distinct stages egg, larva, pupa, and adult
3. How dose Temp. and Humidity effect insect development. -
ANSWER ✔ Higher temp and humidity is typically better for
insects. Temp above threshold will increase reproduction and
humidity will decrease stress.
4. Corn ear worm properties - ANSWER ✔ can vary in color grow 1
inch 1/2 long
,5. Advantages of using insecticides - ANSWER ✔ effective against
thousands of insects, they act quickly, effectiveness can be
evaluated quickly, equipment and formulations are common
6. disadvantages of insecticides - ANSWER ✔ the wide range can
kill beneficial insects, reapeated use can lead to resistance, added
cost of production, potential for drift to areas with benifical insects
7. Oomycetes can be describe as - ANSWER ✔ Water Molds
8. prerequisites for a plant disease - ANSWER ✔ population, Host,
ideal environment, time,
9. Largest Group of plant diseases - ANSWER ✔ Fungi
10. A Chemical Formulation capable of causing injury to plants -
ANSWER ✔ Phytotoxic
11. Reasons to consider treating an infected area with pesticides -
ANSWER ✔ When other prsctices don't work,high value,quality
reduced,sudden breakout
12. What is abiotic - ANSWER ✔ Non-living (example wind
damage)
,13. What is biotic? - ANSWER ✔ living (Example Fungi)
14. T or F Should you avoid driving through field when foliage is
wet, to prevent diseases. - ANSWER ✔ T
15. What is a Pest - ANSWER ✔ any organism that competes
with people for food, fiber or space, or presents a health risk to
people or domestic animals
16. What is an Arthropod - ANSWER ✔ Arthropods are
invertebrate animals with an exoskeleton, like insects and
arachnids
17. What type of damages do arthropods cause - ANSWER ✔
Chewing on leaves, Tunneling in roots, Sucking on plant, cause
galls, Inject toxins, transmit diseases, feed on livestock
18. Difference between insects and arachnids - ANSWER ✔
Insects have 3 pairs of legs, wings and antennae 3 regions of the
body head, thorax and abdomen. While arachnids have 4 pairs of
legs, not wing and no antennae 2 regions head and thorax.
, 19. Describe ways insecticides are used - ANSWER ✔ Seed
Treatment, Soil Application (in Furrow), foliar application to
leaves or fruit.
20. Define weed - ANSWER ✔ Unwanted Plants, we consider all
plants except the crop to be a weed.
21. Two Main Goals of weed management. - ANSWER ✔
Minimize weed competition, and yield loss. Other main goal is to
limit a weeds reproductions to reduce weed population in future
years.
22. Describe ways weeds can pose problems in crop production -
ANSWER ✔ Compete with crops, Reduce crop quality, interfere
with production, produce chemical inhibitors, Irritate or poison,
support insects and diseases,
23. What is a grass - ANSWER ✔ monocots ( corn)
24. what is a broadleaf - ANSWER ✔ Dicots ( soybeans)
25. Ways to distinguish a grass. - ANSWER ✔ one cotyledon
(seed leaf) growing point is at or below soil surface, fibrous root
system, Parallel vein pattern on leaves.