⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️
A stimulus is something in the environment that causes a living organism to respond.living organisms have the ability to detect and react to stimuli, while non living things do not respond to their surroundings.
Examples:,▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️
⚫Morning glories open their petals in the presence of sunlight.
⚫Venus flytraps closes their leaves when they are touched by insects.
⚫Frogs come out when it rains because the rain acts as a stimulus.
⚫Organisms use sense organs like eyes ,ears and taste receptors to detect and respond to stimuli.The ability to respond helps organisms survive in their environment.
🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️
How organisms respond to stimuli.
◾◾◾◾◾◾◾◾◾◾◾◾◾◾
When the environment changes , organisms adapt their behavior to survive.
📍📍📍📍📍📍📍📍📍📍📍📍📍📍📍
For example
Plants respond to sunlight by growing towards it or opening their leaves.
Animals might move to shade during hight heat or seek food when hungry.
⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫
Active Response:▪️▪️▪️▪️▪️
Living organism actively adapt their behavior to stimuli e.g a bird flying to a tree when it sense danger .
⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫
Non Responsiveness in non living things.▪️▪️▪️▪️▪️▪️▪️
A stone rolling down a hill is not responding to stimuli.it is simply moved by gravity.
⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫⚫▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️▪️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️🕳️