Stimulus/Response/Tropism

What is a stimulus?

• The plant's response to light

• Anything causing a change in an organism

• An organisms's reaction to a stimulus

• -

What is Phototropism?

• A plant's response to gravity

• Photosynthesis

• Change in environment/temperature

• A plant's response to light

What are the differences between positive and negative Geotropism?

• Positive Geotropism is the plant growing in the direction of Gravity

• Positive geotropism is the plant growing in the opposite direction of Gravity

• Negative Geotropism is the plant growing in the opposite direction of Gravity

• Negative Geotropism is the plant growing in the direction of Gravity

Are responses important?

• Yes, because stimulus warns us of a change or causes us to do a response

• No, because a response is not necessary when a stimulus occurs

• Yes, because we will know what to do when facing a stimulus

• No, because responses will not help us when facing a stimulus

Tags

NGSS.MS-LS1-8

A plant's response to an external stimulus (light or gravity)

• Phototropism

• Tropism

• Geotropism

• Thigmotropism

What is an example of Thigmotropism?

• A plant's movement towards light

• A plant's response to a touch stimulus

• A plant's response to gravity

• A plants response towards a change

Pain, thirst, fight or flight and hunger, are all examples of what?

• Stimulus

• Response

• Geotropism

• All of the above

Tags

NGSS.MS-LS1-8