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26 Cards in this Set

  • Front
  • Back
angiosperms
the scientific term for flowering plants which produce covered seeds
gymnosperms
nonflowering green plants which produce uncovered seeds
True or False: botanists have classified flowering plants into families according to the structure of their leaves and stems
false (according to the structure of their flowers and fruits)
the largest family of flowering plants
composite family
head
the many small flowers grouped together which make up a composite "flower"
disk flowers
tiny tubular flowers which make up the center of a composite flower's head
ray flowers
showy, petal-like flowers which are placed around the head of a composite flower
common composite flowers
asters, daisies, oxeye daisy, black-eyed Susan, and sunflowers
How do you distinguish between a aster and a daisy?
an aster has several flowers heads on its stem, but a daisy has only one
How do you distinguish between a goldenrod and a ragweed?
the leaves of the goldenrod are long and smooth-edged and those of the ragweed are deeply lobed and ragged
ragweed
a wind-pollinated, composite plant whose pollen causes allergic reactions in many people
name some composite flowers which only have disk flowers
bull thistle, tansies, ironweed
name some composite flowers which only have ray flowers
dandelion, chicory
the second largest plant family
the pea family
True or False: the pea family produce fruit in a pod that splits along one side
false (a pod that splits along two sides)
True or False: legumes help to restore nitrogen to the soil in the nitrogen cycle
true
the members of the pea family
legumes
characteristics of the pea family
> flowers which resemble the pea blossom
> a pod that splits along two sides
> alternating, compound leaves
characteristics of the buttercup family, crowfoot family
> cup-shaped blossoms
> 5 rounded petals
> dry fruits
> non-woody stems
> leaves which are deeply divided into three main sections, giving them an appearance similar to a bird's foot (thus the name crowfoot)
characteristics of the rose family
> cup-shaped blossoms
> flower parts in multiples of five
> fleshy fruits
> woody stems
characteristics of the mint family
> stems are square and stout
> their flower clusters frequently form spikes
> often have a pleasant odor
characteristics of the honeysuckle family
> trumpet-shaped flowers
> fragrant smell
characteristics of the parsley family
> flowers arranged in umbels
> used in foods and medicines
umbels
from the Latin word "umbella" from which we get our word "umbrella"; an arrangement of flowers in which stems of nearly equal length emerge from a common point on the main stem
Queen Anne's lace
the common tall weed which is known for its beauty
characteristics of the milkweed family
> flowers arranged in umbels
> each flower has 5 nectar horns each consisting of a cuplike hood and a slender crest (horn); a petal hangs downward from each nectar horn
> has milky sap
> pods split open along one side