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Worksheets

FFA - Weeds

Total questions: 82

Worksheet time: 3hrs 44mins

Name
Class
Date
1.

What Weed is This?

a)

Barnyard Grass

b)

Crabgrass

c)

Johnson Grass

d)

Smartweed

2.

What Weed is This?

a)

Black Nightsade

b)

Common Chickweed

c)

Velvetleaf

d)

Wild Onion/Garlic

3.

What Weed is This?

a)

Broadleaf Plantain

b)

Buckhorn Plantain

c)

Velvetleaf

d)

Common Lambsquarter

4.

What Weed is This?

a)

Buckhorn Plantain

b)

Broadleaf Plantain

c)

Velvetleaf

d)

Common Lambsquarter

5.

What Weed is This?

a)

Bull Thistle

b)

Dandelion

c)

Jimsonweed

d)

Prickly Lettuce

6.

What Weed is This?

a)

Cheat

b)

Jhonsongrass

c)

Smartweed

d)

Redroot Pigweed

7.

What Weed is This?

a)

Common Chickweed

b)

Common Purslane

c)

Kudzu

d)

Prostrate Knotweed

8.

What Weed is This?

a)

Common Cocklebur

b)

Common Milkweed

c)

Field Sandbur

d)

Jimsonweed

9.

What Weed is This?

a)

Common Lambsquarter

b)

Ground Cherry

c)

Horsenettle

d)

Curly Dock

10.

What Weed is This?

a)

Common Milkweed

b)

Common Cocklebur

c)

Field Sandbur

d)

Velvetleaf

11.

What Weed is This?

a)

Common Purslane

b)

Prostrate Spurge

c)

Prostrate Knotweed

d)

Shepardspurse

12.

What Weed is This?

a)

Common Ragweed

b)

Wild Carrot

c)

Horseweed (Marestail)

d)

Crown Vetch

13.

What Weed is This?

a)

Crabgrass

b)

Barnyard Grass

c)

Johnsongrass

d)

Nutsedge

14.

What Weed is This?

a)

Crown Vetch

b)

Prostrate Knotweed

c)

Wild Carrot

d)

Shepardspurse

15.

What Weed is This?

a)

Curly Dock

b)

Wild Mustard

c)

Horsenettle

d)

Common Milkweed

16.

What Weed is This?

a)

Dandelion

b)

Shepardspurse

c)

Sowthistle

d)

Bull Thistle

17.

What Weed is This?

a)

Field Dodder

b)

Field Sandbur

c)

Kudzu

d)

Prostrate Knotweed

18.

What Weed is This?

a)

Field Sandbur

b)

Common Milkweed

c)

Giant Ragweed

d)

Redroot pigweed

19.

What Weed is This?

a)

Green Foxtail

b)

Yellow Foxtail

20.

What Weed is This?

a)

Yellow Foxtail

b)

Green Foxtail

21.

What Weed is This?

a)

Giant Ragweed

b)

Common Cocklebur

c)

Curly Dock

d)

Morningglory

22.

What Weed is This?

a)

Ground Cherry

b)

Horsenettle

c)

Jimsonweed

d)

Common Cocklebur

23.

What Weed is This?

a)

Horsenettle

b)

Prickly Lettuce

c)

Sowthistle

d)

Bull Thistle

24.

What Weed is This?

a)

Horseweed (Marestail)

b)

Common Ragweed

c)

Crabgrass

d)

Field Sandbur

25.

What Weed is This?

a)

Jimsonweed

b)

Prickly Lettuce

c)

Sowthistle

d)

Wild Mustard

26.

What Weed is This?

a)

Johnsongrass

b)

Common Ragweed

c)

Crabgrass

d)

Nutsedge

27.

What Weed is This?

a)

Kudzu

b)

Sicklepod

c)

Velvetleaf

d)

Common Chickweed

28.

What Weed is This?

a)

Morningglory

b)

Shepardspurse

c)

Common Cocklebur

d)

Jimsonweed

29.

What Weed is This?

a)

Nutsedge

b)

Redroot pigweed

c)

Field Sandbur

d)

Johnsongrass

30.

What Weed is This?

a)

Prickly Lettuce

b)

Sowthistle

c)

Bull Thistle

d)

Horsenettle

31.

What Weed is This?

a)

Prostrate Knotweed

b)

Prostrate Spurge

c)

Common Chickweed

d)

Common Purslane

32.

What Weed is This?

a)

Prostrate Spurge

b)

Common Purslane

c)

Prostrate Knotweed

d)

Common Chickweed

33.

What Weed is This?

a)

Redroot pigweed

b)

Smartweed

c)

Barnyard Grass

d)

Common Ragweed

34.

What Weed is This?

a)

Shepardspurse

b)

Wild Onion/Garlic

c)

Nutsedge

d)

Horsenettle

35.

What Weed is This?

a)

Sicklepod

b)

Common Chickweed

c)

Kudzu

d)

Velvetleaf

36.

What Weed is This?

a)

Smartweed

b)

Redroot pigweed

c)

Giant Ragweed

d)

Common Ragweed

37.

What Weed is This?

a)

Sowthistle

b)

Bull Thistle

c)

Dandelion

d)

Wild Mustard

38.

What Weed is This?

a)

Velvetleaf

b)

Common Cocklebur

c)

Ground Cherry

d)

Kudzu

39.

What Weed is This?

a)

Wild Carrot

b)

Common Ragweed

c)

Horseweed (Marestail)

d)

Prostrate Knotweed

40.

What Weed is This?

a)

Wild Mustard

b)

Velvetleaf

c)

Kudzu

d)

Black Nightshade

41.

What Weed is This?

a)

Wild Onion/Garlic

b)

Nutsedge

c)

Barnyard Grass

d)

Field Sandbur

42.

No ligule, auricles,

or hairs; raceme

seed head; grows

from a rosette.

a)

Crabgrass

b)

Barnyard Grass

c)

Johnsongrass

d)

Nutsedge

43.

Alternate leaves on the stem; egg shaped to elliptical; leaf grows

down the stem; wavy/smooth leaf margin (depends on age). Tends to

be more wavy at the base of the leaf but smooth toward the tip.

a)

Black Nightshade

b)

Common Cocklebur

c)

Curly Dock

d)

Sicklepod

44.

Five prominent veins running down the leaf; short and

fat/wide leaves; smooth leaf margins, smooth texture.

a)

Broadleaf Plantain

b)

Buckhorn Plantain

c)

Curly Dock

d)

Common Cocklebur

45.

Five to seven prominent veins running

down the leaf; long and narrow leaves,

about the width of a thumb (1 inch)

a)

Buckhorn Plantain

b)

Broadleaf Plantain

c)

Curly Dock

d)

Common Cocklebur

46.

Grows from a rosette; leaves are

deeply lobed with one spine on the tip

of each lobe only. Leaf surface will be

covered with tiny hairs. Often

confused with _____ which

has many thorns per lobe.

a)

Bull Thistle

b)

Horsenettle

c)

Dandelion

d)

Common Lambsquarter

47.

Seeds have a

single hair on

each seed; seed

heads are

compact and

opposite of each

other.

a)

Cheat

b)

Field Sandbur

c)

Nutsedge

d)

Wild Onion/Garlic

48.

Small spade shaped leaves that are

opposite of one another. About the size of

your pinky nail. Winter annual plant.

a)

Common Chickweed

b)

Common Purslane

c)

Prostrate Knotweed

d)

Prostrate Spurge

49.

Branches out; seed leaves are long and narrow,

will grow opposite of one another; true leaves

often have 3-5 lobes and are serrated, very rough

textured—like sandpaper. Seed leaves are long

and narrow, smooth-waxy texture. Stems are

thick and almost woody, most commonly

confused with cotton.

a)

Common Cocklebur

b)

Common Lambsquarter

c)

Ground Cherry

d)

Wild Mustard

50.

Grows up and branches off; leaves come off stem

as a “V” then come to a point, leaf margins are wavy

towards the tip of the leaf. Leaves are attached by a

long, narrow petiole.

a)

Common Lambsquarter

b)

Common Cocklebur

c)

Ground Cherry

d)

Wild Mustard

51.

Thick leaves that come off opposite and

are about 10-19 cm long, 5-11 cm wide.

Bleeds a milky white sap. Dominate, white

mid-rib vein.

a)

Common Milkweed

b)

Curly Dock

c)

Prostrate Spurge

d)

Wild Mustard

52.

Thick, succulent leaves and stem.

Stem can usually be reddish-purplish

color. Leaves can grow to be about the

width of your thumb nail. Only

succulent plant on list.

a)

Common Purslane

b)

Crown Vetch

c)

Prostrate Spurge

d)

Prostrate Knotweed

53.

Annual plant. Can grow to be about 5ft tall; hairy

stems and light greenish leaves; leaves are simple but

appear to be compound because of how deeply lobed

each leaf is. Often confused with Wild Carrot.

a)

Common Ragweed

b)

Wild Onion/Garlic

c)

Johnsongrass

d)

Crown Vetch

54.

Annual; only grass with

hairs on stem, makes a

chicken foot- like seed head.

Grows from a rosette.

a)

Crabgrass

b)

Smartweed

c)

Nutsedge

d)

Johnsongrass

55.

Herbaceous vine, leaves are alternate and pinnately compound, with 15

to 25 pairs of leaflets. Compound leaves range from 5 to 10 cm in length

and have nine to twenty-five leaflets. Leaflets are one to two cm long.

Leaflets have smooth margins. Leaves form an even pinnate. Seed leaves

have only three leaflets. First true leaves will have four leaflets.

a)

Crown Vetch

b)

Common Ragweed

c)

Wild Carrot

d)

Shepardspurse

56.

Long, narrow, lance-shaped leaves are curled and

have wavy margins. Can have a very tall stalk (seed

head)

a)

Curly Dock

b)

Black Nightshade

c)

Velvetleaf

d)

Jimsonweed

57.

Grows from a rosette;

lobes are pointed and point

back to the center of the

plant; only makes one

flower per rosette and will

never have leaves.

a)

Dandelion

b)

Sowthistle

c)

Prickly Lettuce

d)

Bull Thistle

58.

Leaf-less vine; has slender, twining or

threadlike stems that vary from pale green to

yellow or bright orange. It’s a parasitic annual

plant that infests many crops, ornamentals,

native plants, and weeds.

a)

Field Dodder

b)

Wild Onion/Garlic

c)

Cheat

d)

Johnsongrass

59.

Hairless, annual

grass that produces

numerous green to

straw-colored spiny

burs at maturity.

Seeds are very

sharp and can be

dangerous to both

people and animals.

a)

Field Sandbur

b)

Common Cocklebur

c)

Jimsonweed

d)

Bull Thistle

60.

Hairs are completely absent on the leaf.

(Plants aren’t supposed to have hair)

a)

Green Foxtail

b)

Yellow Foxtail

61.

Has very long hairs one the lower leaf surface.

a)

Yellow Foxtail

b)

Green Foxtail

62.

Trident shaped

leaves (three points),

very rough in texture.

Grows to be about 10

-

15 ft tall, leaves are

about the width of

your hand.

a)

Giant Ragweed

b)

Common Ragweed

c)

Velvetleaf

d)

Wild Mustard

63.

Stems have flat

sides, leaves do

not grow down

the petiole,


makes a lantern-

like fruit, veins


are very visible.

a)

Ground Cherry

b)

Common Milkweed

c)

Jimsonweed

d)

Wild Onion/Garlic

64.

Has spines on stem and on midrib vein along upper

and lower leaves, wavy leaf margin.

a)

Horsenettle

b)

Horseweed (Marestail)

c)

Prickly Lettuce

d)

Sowthistle

65.

Short hairs, seed heads will branch

out and are usually found on top half

of plant, does not bleed, leaf margins

will have small indentions, biennial,

rosette leaves are wider than mature

leaves.

a)

Horseweed (Marestail)

b)

Horsenettle

c)

Shepardspurse

d)

Crabgrass

66.

Seed pod is large and spikey leaves have very distinct odor when rubbed, seed leaves are very long, slender, and come to a point.

a)

Jimsonweed

b)

Bull Thistle

c)

Common Milkweed

d)

Ground Cherry

67.

Spreads by rhizome, large panicle seed

head leaves are 1” wide with thick white

midrib vein stems are thick, tallest of all

the grasses.

a)

Johnsongrass

b)

Barnyard Grass

c)

Cheat

d)

Crabgrass

68.

An invasive, perrenial vine.

_____ is a legume as

evidenced by its trifoliate

leaves. Leaflets are attached

to petioles. Leaflet margins

are entire and pointed.

Young vines are covered

with bronze hairs that fall

off when the plant gets

older.

a)

Kudzu

b)

Prostrate Spurge

c)

Curly Dock

d)

Morningglory

69.

Binding vine. Leaves can be heart shaped,

ivy leaf style, even cypress-leaf style.

Will not have an arrowhead appearance

like Field Bindweed.

a)

Morningglory

b)

Prostrate Knotweed

c)

Kudzu

d)

Field Dodder

70.

Spreads by rhizome, stem is triangular, leaves

have groove down the center (“V” shaped) leaves

grow at the bottom and top of the plant.

a)

Nutsedge

b)

Common Lambsquarter

c)

Johnsongrass

d)

Redroot pigweed

71.

Has small thorns on the

underside of the midrib vein,

leaf margins makes short,

pointed lobes similar to an

immature dandelion.

a)

Prickly Lettuce

b)

Sowthistle

c)

Bull Thistle

d)

Horsenettle

72.

Leaves are about 1in long oblong shaped (football

shaped), alternating, does not bleed, nodes are

slightly swollen, grows from a rosette.

a)

Prostrate Knotweed

b)

Prostrate Spurge

c)

Common Chickweed

d)

Common Purslane

73.

Leaves come off opposite, bleeds a white

sap, are not succulent.

a)

Prostrate Spurge

b)

Prostrate Knotweed

c)

Common Chickweed

d)

Common Purslane

74.

Seed leaves are narrow, pointed toward the end, true leaves are alternate along the stem and are oval or long and narrow with very visible veins.

a)

Redroot pigweed

b)

Smartweed

c)

Giant Ragweed

d)

Common Ragweed

75.

Winter annual broadleaf weed; rosette leaves are

lobed. Seed heads are heart-shaped and alternating.

a)

Shepardspurse

b)

Sowthistle

c)

Morningglory

d)

Dandelion

76.

An annual legume that is common in

the Southeast. Leaves make an even

pinnate and the leaflets are egg

shaped. Leaflets are opposite, have 2-

3 pairs, and the pair closest to the

stem is smallest. Pairs get larger

closer to the tip of the leaf. Similar in

appearance to Peanut plants when

immature.

a)

Sicklepod

b)

Wild Mustard

c)

Common Chickweed

d)

Kudzu

77.

Perennial, leaves are very long and

narrow, comes to a point, come off

opposite. Flowers look similar to a brain.

Grows in areas that collect an excessive

amount of moisture, such as low-lying

areas and ditches.

a)

Smartweed

b)

Redroot pigweed

c)

Common Ragweed

d)

Cheat

78.

Biennial plant that resembles

dandelion. Rosette leaves also point

back towards the stem but true leaf

margin’s are prickly but not painful;

makes several flowers per plant rather

than one.

a)

Sowthistle

b)

Shepardspurse

c)

Dandelion

d)

Bull Thistle

79.

Leaves are heart-shaped with serrated-like leaf margins,

entire surface area is very “velvety.”

a)

Velvetleaf

b)

Kudzu

c)

Curly Dock

d)

Broadleaf Plantain

80.

Biennial,grows from a rosette, compound leaves, flowers form an umbel, if given at the contest a carrot will not be shown.

a)

Wild Carrot

b)

Prostrate Knotweed

c)

Horseweed (Marestail)

d)

Common Ragweed

81.

In the brassica family, the only one w/ hairs on

the leaves, leaf margin is toothed/serrated,

somewhat lobbed.

a)

Wild Mustard

b)

Jimsonweed

c)

Common Lambsquarter

d)

Common Cocklebur

82.

Grows to be about 6-12”tall, lime/light green in color, has a thin, hollow stem and give off a very strong oniony odor when cut.

a)

Wild Onion/Garlic

b)

Bull Thistle

c)

Common Ragweed

d)

Black Nightshade