Plant Responses - Tropisms

 A stimulus is ___________

• a change in an organisms surroundings.
•  process in which organisms grow larger.
• a reaction to a change in surroundings
• the result of sexual reproduction.

Which of the following is an organism’s reaction to a change in its surroundings?

• response 
• distraction
• stimulus
• development

Tags

NGSS.MS-LS1-8

Which of the following responses is a plant growing toward or leaning toward light?

• thigmotropism
• hydrotropism
• phototropism
• gravitropism

A plant's root grow in a downward direction in response to what force? 

• sunlight
• gravity
• soil
• turgor pressure

Tags

NGSS.MS-LS1-5

What is a tropism? 

• A stimulus that affects plants. 
• The way a plant responds to a stimulus. 
• The way a plant grows.
• The way a plant dies. 

If a plant experiences a gravitropism, then it will do what?

• Grow toward or away from light. 
• Grow away from light. 
• Grow toward light.
• Grow in response to gravity. 

Tags

NGSS.MS-LS1-5

A plants roots grow thicker towards the stream than away from the stream. To what stimulus is the plant responding to?

• thigmotropism

• gravitropism

• photoropism

• hydrotropism

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

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

• phototropism

• gravitropism

• hydrotropism

• thigmotropism

What force or substance causes turgor pressure?

• light
• gravity
• glucose
• water

What force allows a plant to become more rigid and stand upright?

• turgor pressure
• geotropism
• photosynthesis
• phototropism