explain with an example what is meant by living things respond to stimuli
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A tropism is a response that an organism makes to a stimulus. Anexample of a common tropism in plants is phototropism (or lightresponse). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival
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A tropism is a response that an organism makes to a stimulus. An example of a common tropism in plants is phototropism (or light response). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
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A Look at Stimuli
Our environment is constantly changing, and in order for us and other living things to survive those changes, we must be able to respond to them. Any detectable change in the environment is called a stimulus. Usually, a stimulus is a product of change in an energy source or force, such as light, or sound, or heat. As humans, we detect and respond to stimulus in order to survive.
For example, if you walk outside on a very sunny day, your pupils will constrict to protect your eye from taking in too much light and being damaged. Your body reacts to the stimulus (the light) to protect you. Let's take a closer look at how a stimulus is detected.
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Detection of Stimuli:-
In order for an organism (such as a plant or an animal) to adjust to a change in the environment, it must first be able to detect (or physically recognize) the change. This detection of a stimulus is called sensitivity.
In humans, sensitivity is due to portions of the nervous system called receptors. Receptors are typically neurons or cells that are able to sense changes in the environment. For example:
Photoreceptors in the eyes detect changes in light
Thermoreceptors detect changes in heat
Baroreceptors detect changes in pressure
And there are many other examples that can be used to illustrate the point. What's important to remember is that in order for us to be sensitive to a particular stimulus, we must have receptors for that stimulus. If not, we won't be able to recognize the change.
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A tropism is a response that an organism makes to a stimulus. An example of a common tropism in plants is phototropism (or light response). Plants grow towards light sources, and if the direction of light is changed, the plant will also change its direction of growth to accommodate for survival.
✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️✌️
A Look at Stimuli
Our environment is constantly changing, and in order for us and other living things to survive those changes, we must be able to respond to them. Any detectable change in the environment is called a stimulus. Usually, a stimulus is a product of change in an energy source or force, such as light, or sound, or heat. As humans, we detect and respond to stimulus in order to survive.
For example, if you walk outside on a very sunny day, your pupils will constrict to protect your eye from taking in too much light and being damaged. Your body reacts to the stimulus (the light) to protect you. Let's take a closer look at how a stimulus is detected.
⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
Detection of Stimuli:-
In order for an organism (such as a plant or an animal) to adjust to a change in the environment, it must first be able to detect (or physically recognize) the change. This detection of a stimulus is called sensitivity.
In humans, sensitivity is due to portions of the nervous system called receptors. Receptors are typically neurons or cells that are able to sense changes in the environment. For example:
Photoreceptors in the eyes detect changes in light
Thermoreceptors detect changes in heat
Baroreceptors detect changes in pressure
And there are many other examples that can be used to illustrate the point. What's important to remember is that in order for us to be sensitive to a particular stimulus, we must have receptors for that stimulus. If not, we won't be able to recognize the change.
⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
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