Plant Response to Stimuli

Growth of a plant in response to an external stimulus, such as light

• hormone
• tropism
• phototropism
• stimulus

anything that causes a reaction or change in an organism

• hormone
• carbon dioxide
• stimulus
• chlorophyl

what type of tropism is occurring here?

• phototropism

• thigmotropism

• geotropism

• tropictropism

what type of tropism is occurring here?

• phototropism

• thigmotropism

• gravitropism

• tropictropism

what type of tropism is occurring here?

• phototropism

• thigmotropism

• geotropism

• tropictropism

When the plant grows toward the stimuli

• Positive
• Negative

A vine plant brushes against a fence and wraps itself around the fence.  To what stimulus is the plant responding? 

• phototropism
• hydrotropism
• thigmotropism
• gravitropism

Plant’s roots grow down, anchoring it into the soil. To what stimulus is the plant responding?

• thigmotropism
• hydrotropism
• phototropism
• gravitropism

A period of a plant when is does NOT grow

• spore
• stamen
• nutrient
• dormancy

Tropisms are...

• Plant responses to stimuli

• Types of neurone

• Types of plant hormone

• Types of plant