NEVADA AGRICULTURAL GROUND PEST CONTROL APPLICATOR
CATEGORY B2 WEEDS EXAMINATION
COMPLETE STUDY GUIDE: 200 EXAM QUESTIONS WITH DETAILED
ANSWERS
SECTION 1: WEED IDENTIFICATION AND BIOLOGY (Questions 1-30)
1. Which characteristic most clearly distinguishes a broadleaf weed
from a grass weed during agricultural field scouting?
A. Broadleaf weeds generally have parallel leaf veins
B. Broadleaf weeds generally have netted leaf venation
C. Broadleaf weeds always produce underground bulbs
D. Broadleaf weeds never produce flowers
Answer: B
2. Which of the following are typical characteristics of monocot (grass)
weeds? (Select all that apply)
A. Parallel leaf venation
B. Fibrous root systems
C. Netted leaf venation
D. Growth from a basal meristem
Answer: A, B, D
3. Why should an applicator identify a weed species accurately before
selecting and applying a herbicide treatment?
A. Herbicides control every weed species equally
,B. Weed identification determines only application equipment
C. Different weed species vary considerably in susceptibility to
herbicides
D. Identification is required only after herbicide application
Answer: C
4. List three key morphological features used to identify broadleaf
weeds during early growth stages.
Answer: 1. Leaf shape and arrangement (alternate vs. opposite). 2.
Presence of petioles (leaf stalks). 3. Netted venation patterns.
5. A weed that completes its entire life cycle in one growing season is
classified as a(n) ____________ weed.
A. Biennial
B. Perennial
C. Annual
D. Winter annual
Answer: C
6. What is the primary distinguishing feature of a biennial weed?
A. It completes its life cycle in one year
B. It lives for two years, typically flowering and producing seed in the
second year
C. It has a woody stem and lives for many years
D. It reproduces exclusively through underground rhizomes
Answer: B
,7. Which of the following weed types are considered the most difficult
to control due to their persistent underground reproductive
structures? (Select all that apply)
A. Perennial weeds with deep taproots
B. Perennial weeds with creeping rhizomes
C. Summer annual broadleaves
D. Winter annual grasses
Answer: A, B
8. When scouting, you notice a weed with a triangular stem, umbel-
shaped flower clusters, and a distinct onion-like odor. This is most
likely a member of the ____________ family.
Answer: Allium (or Onion)
9. Which of the following best describes the leaf arrangement of a
weed with "opposite" leaves?
A. Leaves alternate on opposite sides of the stem
B. Two leaves grow at the same node directly across from each other
C. Leaves whorl around the stem in groups of three
D. Leaves emerge directly from the soil surface
Answer: B
10. Define the term "noxious weed" as it applies to Nevada
agricultural regulations.
Answer: A noxious weed is any plant designated by federal, state, or
, county law as injurious to public health, agriculture, recreation, wildlife,
or property.
11. Which of the following is a key identifier of a grass weed seedling?
A. Broad, fleshy leaves
B. A single cotyledon (seed leaf)
C. Netted vein patterns
D. Taproot system
Answer: B
12. A weed that germinates in the fall, overwinters as a rosette, and
produces seed in the spring is called a ____________.
A. Summer annual
B. Winter annual
C. Biennial
D. Simple perennial
Answer: B
13. Which of the following are common examples of broadleaf weeds
found in Nevada agricultural settings? (Select all that apply)
A. Canada thistle
B. Hoary cress (Whitetop)
C. Cheatgrass
D. Field bindweed
Answer: A, B, D
CATEGORY B2 WEEDS EXAMINATION
COMPLETE STUDY GUIDE: 200 EXAM QUESTIONS WITH DETAILED
ANSWERS
SECTION 1: WEED IDENTIFICATION AND BIOLOGY (Questions 1-30)
1. Which characteristic most clearly distinguishes a broadleaf weed
from a grass weed during agricultural field scouting?
A. Broadleaf weeds generally have parallel leaf veins
B. Broadleaf weeds generally have netted leaf venation
C. Broadleaf weeds always produce underground bulbs
D. Broadleaf weeds never produce flowers
Answer: B
2. Which of the following are typical characteristics of monocot (grass)
weeds? (Select all that apply)
A. Parallel leaf venation
B. Fibrous root systems
C. Netted leaf venation
D. Growth from a basal meristem
Answer: A, B, D
3. Why should an applicator identify a weed species accurately before
selecting and applying a herbicide treatment?
A. Herbicides control every weed species equally
,B. Weed identification determines only application equipment
C. Different weed species vary considerably in susceptibility to
herbicides
D. Identification is required only after herbicide application
Answer: C
4. List three key morphological features used to identify broadleaf
weeds during early growth stages.
Answer: 1. Leaf shape and arrangement (alternate vs. opposite). 2.
Presence of petioles (leaf stalks). 3. Netted venation patterns.
5. A weed that completes its entire life cycle in one growing season is
classified as a(n) ____________ weed.
A. Biennial
B. Perennial
C. Annual
D. Winter annual
Answer: C
6. What is the primary distinguishing feature of a biennial weed?
A. It completes its life cycle in one year
B. It lives for two years, typically flowering and producing seed in the
second year
C. It has a woody stem and lives for many years
D. It reproduces exclusively through underground rhizomes
Answer: B
,7. Which of the following weed types are considered the most difficult
to control due to their persistent underground reproductive
structures? (Select all that apply)
A. Perennial weeds with deep taproots
B. Perennial weeds with creeping rhizomes
C. Summer annual broadleaves
D. Winter annual grasses
Answer: A, B
8. When scouting, you notice a weed with a triangular stem, umbel-
shaped flower clusters, and a distinct onion-like odor. This is most
likely a member of the ____________ family.
Answer: Allium (or Onion)
9. Which of the following best describes the leaf arrangement of a
weed with "opposite" leaves?
A. Leaves alternate on opposite sides of the stem
B. Two leaves grow at the same node directly across from each other
C. Leaves whorl around the stem in groups of three
D. Leaves emerge directly from the soil surface
Answer: B
10. Define the term "noxious weed" as it applies to Nevada
agricultural regulations.
Answer: A noxious weed is any plant designated by federal, state, or
, county law as injurious to public health, agriculture, recreation, wildlife,
or property.
11. Which of the following is a key identifier of a grass weed seedling?
A. Broad, fleshy leaves
B. A single cotyledon (seed leaf)
C. Netted vein patterns
D. Taproot system
Answer: B
12. A weed that germinates in the fall, overwinters as a rosette, and
produces seed in the spring is called a ____________.
A. Summer annual
B. Winter annual
C. Biennial
D. Simple perennial
Answer: B
13. Which of the following are common examples of broadleaf weeds
found in Nevada agricultural settings? (Select all that apply)
A. Canada thistle
B. Hoary cress (Whitetop)
C. Cheatgrass
D. Field bindweed
Answer: A, B, D
