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What is another name for plant hormones?
Phytohormones
Name 3 main plant responses
1)Nastic movements 2)tropisms 3)seasonal changes
Tropisms can be positive and .....?
Negative
What type of movements are temporary plant responses?
Nastic movements
What type of movements are slow and irreversable?
Tropisms
Flowering in the spring is an example of what type of plant response?
Seasonal changes
What factors cause plants to make seasonal changes?
Changes in temperature, changes in light, changes in the length of the day or night
What are light and gravity examples of?
Plant stimuli
What substance controls plant activities?
Plant hormones (or phytohormones)
What type of plant response is this example: A flower opening in the daytime and closing at nighttime A) Nastic movement B) Tropism C) Seasonal Change
Nastic movements
What type of plant response is this example: a sunflower following the sun? A) Nastic movement B) Tropism C) Seasonal Change
Nastic movements
What plant response is slow and irreversible?
Tropism
What plant response is fast?
Nastic movement
What plant response is irreversible?
Tropism
Roots growing away from the sun is.... tropism
Negative
An example of positive tropism is...
Stems growing towards the light
