STIMULUS AND RESPONSE Why animals and plants do what they do? OR CAUSE AND EFFECT in plants and animals
STIMULUS AND RESPONSE
Why animals and plants do what they do?
OR
CAUSE AND EFFECT in plants and animals
• Describe a situation in which you were immediately scared and/or reacted quickly to something
• Write 4 sentences describing it:• First…• Second….• Then….• Finally…..
WHAT IS A STIMULUS ?
• STIMULUS: any action that makes and organism to react. That is cause
• Stimulus : singular• Stimuli: plural• Example: Give us an example!!!
WHAT IS A RESPONSE?
• RESPONSE: how the organism reacts to an stimulus and changes in behaviour. That is an effect
• Ex: • Give us an example!!!
Examples of stimuli and their responses:
There are two types of stimuli:
EXTERNAL STIMULI
AND
INTERNAL STIMULI
External Stimulus:
• External Stimulus: a stimulus that comes from the outside an organism
• Examples:
Internal Stimulus:
• Internal Stimulus: a stimulus that comes from inside an organism
• Examples:
Decide whether these stimuli are internal or external
The external receptors are in the sense organs
There are two types of responses
MUSCULAR RESPONSE AND GLANDULAR RESPONSE
Muscular response
• Muscular response: a response made by the muscles
• Examples:
Glandular response
• Glandular response: substances produced by the glands
• Examples:
Summarize what you have learned • 1.-What is a stimulus?• 2.- What is a response?• 3.- Give an example of a stimulus and its response• 4.- What is an internal stimulus?• 5.- What is an external stimulus?• 6.-It´s raining and you open up an umbrella. Is this an internal
or external response ? Why?• 7.- What are the external receptors?