IOWA HERBICIDE RIGHT OF WAY CATEGORY 6
PRACTICE EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◉ Cuticle. Answer: a protective coating on leaves
◉ Stems. Answer: provide support, some photosynthesis, and food
storage
◉ Stolons. Answer: horizontal stems running on the soil surface
◉ Rhizomes. Answer: underground horizontal stems
◉ Roots. Answer: offer anchorage, water, and nutrient uptake, and food
storage
◉ Xylem. Answer: moves water and soil nutrients from the roots to the
leaves
◉ Pholem. Answer: transports sugars that are manufactures in the leaves
during photosynthesis, primarily downward to the roods
,◉ Cambium. Answer: the plant tissue responsible for growth
◉ Benefits of vegetation management on rights-of-way. Answer: to keep
weeds clear of signals, signs, crossroads, and other cars; to allow for
inspections in ROW's; to minimize fire hazard; to reduce power and
communication interruptions; and improve drainage
◉ Grasses. Answer: plants with narrow, up-right leaves with parallel
veins, stems that are hollow and jointed, and fibrous root systems
◉ Broadleaves. Answer: plants with non-parallel leaf margins and non-
parallel leaf veins, with coarse root systems (often with a noticeable tap-
root)
◉ Forb. Answer: broad-leafed herbaceous plant (doesn't produce
persistent woody tissue)
◉ Trees. Answer: broadleaf plants that produce persistent, woody tissue
on branching, erect stems. This plant usually has a main stem (trunk),
and grows more than 10 feet.
◉ Brush. Answer: broadleaf plants that produce persistent, woody tissue
on branching, erect stems. This is a woody plant with multiple stems that
grow less than 10 feet high.
, ◉ Ferns. Answer: seedless plants that spread by spores and prefer moist
soils.
◉ Annual plants. Answer: plants that complete their life cycle in one
year
◉ Biennial plants. Answer: Plants that complete their life cycle in two
growing seasons. Best controlled during the first year.
◉ Perennial plants. Answer: Plants that complete all four growth stages
in the first year, then repeat the vegetative, reproductive, and maturity
stages for several years following. Best controlled as seedlings.
◉ Simple Perennials. Answer: spread by seed, and cut root segments
◉ Creeping Perennials. Answer: spread by stolons, rhizomes, or by seed
◉ Bulbous perennials. Answer: reproduce from underground bulbs or
tubers (they also produce seed)
◉ Weed Growth Stages. Answer: 1. Seedling
2. Vegetative
3. Reproductive
PRACTICE EXAM PAPER 2026 QUESTIONS
WITH ANSWERS GRADED A+
◉ Cuticle. Answer: a protective coating on leaves
◉ Stems. Answer: provide support, some photosynthesis, and food
storage
◉ Stolons. Answer: horizontal stems running on the soil surface
◉ Rhizomes. Answer: underground horizontal stems
◉ Roots. Answer: offer anchorage, water, and nutrient uptake, and food
storage
◉ Xylem. Answer: moves water and soil nutrients from the roots to the
leaves
◉ Pholem. Answer: transports sugars that are manufactures in the leaves
during photosynthesis, primarily downward to the roods
,◉ Cambium. Answer: the plant tissue responsible for growth
◉ Benefits of vegetation management on rights-of-way. Answer: to keep
weeds clear of signals, signs, crossroads, and other cars; to allow for
inspections in ROW's; to minimize fire hazard; to reduce power and
communication interruptions; and improve drainage
◉ Grasses. Answer: plants with narrow, up-right leaves with parallel
veins, stems that are hollow and jointed, and fibrous root systems
◉ Broadleaves. Answer: plants with non-parallel leaf margins and non-
parallel leaf veins, with coarse root systems (often with a noticeable tap-
root)
◉ Forb. Answer: broad-leafed herbaceous plant (doesn't produce
persistent woody tissue)
◉ Trees. Answer: broadleaf plants that produce persistent, woody tissue
on branching, erect stems. This plant usually has a main stem (trunk),
and grows more than 10 feet.
◉ Brush. Answer: broadleaf plants that produce persistent, woody tissue
on branching, erect stems. This is a woody plant with multiple stems that
grow less than 10 feet high.
, ◉ Ferns. Answer: seedless plants that spread by spores and prefer moist
soils.
◉ Annual plants. Answer: plants that complete their life cycle in one
year
◉ Biennial plants. Answer: Plants that complete their life cycle in two
growing seasons. Best controlled during the first year.
◉ Perennial plants. Answer: Plants that complete all four growth stages
in the first year, then repeat the vegetative, reproductive, and maturity
stages for several years following. Best controlled as seedlings.
◉ Simple Perennials. Answer: spread by seed, and cut root segments
◉ Creeping Perennials. Answer: spread by stolons, rhizomes, or by seed
◉ Bulbous perennials. Answer: reproduce from underground bulbs or
tubers (they also produce seed)
◉ Weed Growth Stages. Answer: 1. Seedling
2. Vegetative
3. Reproductive
