Station 18

1
Station 18
Plant Responses and Adaptations

• Tropisms responses of plants to environmental
  stimuli
• Types of tropisms
• gravitropism
• phototropism
• thigmotropism

2
Station 18
Gravitropism and Phototropism
Gravitropism response of a plant to gravity
stems go up, roots go down Phototropism
response of a plant to light (bending toward
the light)
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Station 18
Thigmotropism

• Response of plants to touch
• Can stunt growth
• Can cause twining of plant tendrils with vines
  and climbing plants
• Can have as a quick response Venus flytrap

4
Compare/Contrast Table plant adaptations
Station 18
Section 25-3
Comparing Carnivorous Plants, Epiphytes, and
Parasites
Characteristics Environment Method of obtaining
nutrients Examples
Carnivorous Plants bog leaves that trap and
digest insects pitcher plant, sundew, Venus
flytrap
Epiphytes host plant gather moisture from
rainfall and produce their own food Spanish moss,
orchid
Parasites host plant extract moisture and
nutrients from host plant dodder, mistletoe