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Weed Management > Quiz 1 > Flashcards

Quiz 1 Flashcards

1
Q

tansy ragwort

A
  • Asteraceae
  • flowers bunched at top
  • biennial
  • alternate leave
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2
Q

pineappleweed

A
  • Asteraceae
  • smells good
  • annual
  • **small, cone shaped flowers **
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3
Q

prickly lettuce

A
  • Asteraceae
  • spiny midrib on the underside
  • biennial, winter annual
  • clasping lobes
  • flowers all flat yellow
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4
Q

horseweed

A
  • Asteraceae
  • annual
  • large flowers on the bottom, smaller on top
  • **stalked leaves on the bottom **
  • wimpy dandelion looking leaves
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5
Q

Canada thistle

A
  • Asteraceae
  • perennial
  • small purple flowers
  • no spikes on involucre
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6
Q

bull thistle

A
  • Asteraceae
  • biennial
  • large purple flowers
  • spines on involucre
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7
Q

yellow starthistle

A
  • Asteraceae
  • annual
  • yellow flowers with spines on underside
  • leaves deeply lobed
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8
Q

mayweed chamomile

A
  • Asteraceae
  • annual
  • foul smelling
  • very bushy when flowering
  • flowers look like perfect daisies
    *
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9
Q

wild carrot

A
  • Apiaceae
  • bienniel
  • strong carrot smell
  • umbels of white flowers
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10
Q

cow parsnip

A
  • Apiaceae
  • perennial
  • **huge white umbels **
  • huge hairy and grooved leaves
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11
Q

poison hemlock

A
  • Apiaceae
  • biennial
  • blotchy purple stem
  • white, perfect flowers
  • shiny, finely pinnately leaves divided 3-4 times, segmented leaflets
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12
Q
A

tansy ragwort

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13
Q
A

poison hemlock

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14
Q

Apiaceae

A
  • parsley family
  • odiferous
  • hollow stems
  • umbels
  • leaves are alternate or all basal
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15
Q

pigweed

A
  • Amaranthaceae
  • annual
  • prominant veins
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16
Q

types of leaves

A

petiolate, sessile and clasping

17
Q

What is a Petiolate leaf?

A

leaf is borne on a petiole, stalk or stem

18
Q

What is a sessile leaf?

A

leaf lacks a petiole, stem or stalk, is attached directly to the stem

19
Q

Characteristics of Apiaceae

A

leaves are alternate or all basal

leaves are simple to pinnately/palmately compound

odoriferous

stems are often hollow

infloresence is composed of simple or compound umbels of perfect flowers

20
Q

Characteristics of Amaranthaceae

A

leaves are alternate and simple. no stipules. deep veins

infloresence is varied, frequently with three colorful bracts subtending the flowers

flowers are small and non-showy, no petals. usually greenish purple

21
Q

perianth

A

petals and sepals

22
Q

corolla

A

all petals together

23
Q

calyx

A

all sepals together

24
Q

receptacle

A

where flower is attached,

supports sepals, petals, stamens and pistils

25
Q

pedicle

A

flower stem

26
Q

parts of stamen

A

anther, filament

27
Q

parts of pistil

A

stigma, style, ovary

28
Q

petiole

A

stalk of leaf

29
Q

raceme

A

flowers are single on individual pedicels along an elongated rachis

30
Q

Panicle

A

infloresence with two or more flowers on a branch arranged on an elongated axis (the rachis. the basal or lateral flowers or some of them, open before the terminal or central flowers on any axis. Typically in grasses.

31
Q

Cyme

A

branched inflorescence in which the central or uppermost flower opens before the peripheral or lowermost flowers on any axis

32
Q

Umbel

A

a flat topped or rounded cluster where pedicels radiate from the same point, no rachis.

33
Q

Spike

A

inflorescence with perfect sessile flowers along the rachis. Typically in grasses.

34
Q

What are the Asteraceae that are annuals?

A

Mayweed Chamomile

yellow starthistle

horseweed

pineappleweed

common groundsel

spiny sowthistle

35
Q

What are the asteraceae that are biennial?

A

bull thistle

pricky lettuce (also winter annual)

tansy ragwort

36
Q

Which of the Asteraceae are Perennial?

A

Canada thistle

37
Q

spiny sowthistle

A

Asteraceae

annual

clasping leaves

contains a milky juice

looks like dandelion but spiny leaves

38
Q

common groundsel

A

Asteraceae

annual

black tipped involucral bracts

yellow disk flowers

irregularly toothed leaves

39
Q
A

Weed Management (6 decks)

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