Plant Reproduction and Response

Poison Ivy growing on a tree by touch.

• Geotropism 
• Phototropism
• Thigmotropism
• Hydrotropism

A plant growing in response to the sunlight. 

• Geotropism 
• Phototropism
• Thigmotropism
• Hydrotropism

The shoot of a plant growing up. 

• Positive Geotropism 
• Negative Geotropism 
• Thigmotropism
• Hydrotropism

The root of a plant growing down. 

• Positive Geotropism 
• Negative Geotropism 
• Thigmotropism
• Hydrotropism

When a plant responds to gravity it is called:

• Phototropism
• Thigmotropism
• Geotropism
• Hydrotropism

When a plant grows toward a stimuli it is known as:

• Positive
• Negative

When a plant grows away from a stimuli (stimulus = change in surroundings) it is called:

• Positive

• Negative

When the plant responds to light, it is known as:

• Phototropism
• Geotropism
• Thigmotropism
• Hydrotropism

When the plant responds to touch it is known as:

• Phototropism
• Thigmotropism
• Geotropism
• Hydrotropism

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

• phototropism
• hydrotropism
• thigmotropism
• geotropism