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Unique Tropism of Plants

Unique Tropism of Plants. By: Annie, Marcos, Joe, Liz. What is Tropism in Plants ?. Tropism in plants are a growth or movement in response to a direct stimulu s. Types of Tropism. Hydrotropism Gravirtropism Phototropism Thingtropism. Hydrotropism.

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Unique Tropism of Plants

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  1. Unique Tropism of Plants By: Annie, Marcos, Joe, Liz

  2. What is Tropism in Plants ? • Tropism in plants are a growth or movement in response to a direct stimulus

  3. Types of Tropism • Hydrotropism • Gravirtropism • Phototropism • Thingtropism

  4. Hydrotropism • Hydrotropism is movement or growth in response to moister or water • Hydro- prefix for water so the roots grow toward water • Ex- pea plant

  5. Gravitropism • Gravitropism is movement or growth in the response to growth • Gravi-is a prefix relating to gravity, so the roots will grow downward while the plant grows upward • Ex- topsyturvy

  6. Phototropism • Phototropism is movement or growth in response to light • Photo-, is a prefix relating to light, so things will grow toward the sun or light source. • Ex- Sun flower

  7. Thingmotropsim • Thingmotropsim is movement or growth in response to touch • Ex- sweat pea

  8. Why plants use tropisms ? • Plants are unable to be relocated if they happen to start growing were condition are right. • however plants can alter their growth so they can grow in more favorable conditions • they do this by detecting were conditions are right they altar their growth by using their tropisms.

  9. Negative and positive response to tropism • Positive = the plant, or a part of it, grows in the direction from which the stimulus came from. • Negative = growth away from the stimulus.

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