Movement in sensitive plants: 1. The movement that takes place in a sensitive plant such as Mimosa pudica occurs in response to touch (stimulus). 2. For this movement, the information is transmitted from cell to cell by electrochemical signals as plants do not have any specialised tissue for conductRead more
Movement in sensitive plants:
1. The movement that takes place in a sensitive plant such as Mimosa pudica occurs in response to touch (stimulus).
2. For this movement, the information is transmitted from cell to cell by electrochemical signals as plants do not have any specialised tissue for conduction of impulses.
3. For this movement to occur, the plant cells change shape by changing the amount of water in them.
Movement in our legs:
1. Movement in our legs is an example of voluntary actions.
2. The signal or messages for these actions are passed to the brain and hence are consciously controlled.
3. In animal muscle cells, some proteins are found which allow the movement to occur.
Nervous system mechanism: 1. The information is conveyed in the form of electric impulse. 2. The axons and dendrites transmit the information through a coordinated effort. 3. The flow of information is rapid and the response is quick. 4. Its effects are short lived. Hormonal system mechanism: 1. TheRead more
Nervous system mechanism:
1. The information is conveyed in the form of electric impulse.
2. The axons and dendrites transmit the information through a coordinated effort.
3. The flow of information is rapid and the response is quick.
4. Its effects are short lived.
Hormonal system mechanism:
1. The information is conveyed in the form of chemical messengers.
2. The information is transmitted or transported through blood.
3. The information travels slowly and the response is slow.
4. It has prolonged effects.
Animals have a nervous system for controlling and coordinating the activities of the body. But plants have neither a nervous system nor muscles. Plants respond to stimuli by showing movements. The growth, development, and responses to the environment in plants is controlled and coordinated by a specRead more
Animals have a nervous system for controlling and coordinating the activities of the body. But plants have neither a nervous system nor muscles. Plants respond to stimuli by showing movements. The growth, development, and responses to the environment in plants is controlled and coordinated by a special class of chemical substances known as hormones. These hormones are produced in one part of the plant body and are translocated to other needy parts. For example, a hormone produced in roots is translocated to other parts when required. The five major types of phytohormone are auxins, gibberellins, cytokinins, abscisic acid, and ethylene. These phytohormones are either growth promoters (such as auxins, gibberellins, cytokinins, and ethylene) or growth inhibitors such as abscisic acid.
Involuntary actions cannot be consciously controlled. For example, we cannot consciously control the movement of food in the alimentary canal or pumping of blood through heart. These actions are however directly under the control of the brain. On the other hand, the reflex actions such as closing ofRead more
Involuntary actions cannot be consciously controlled. For example, we cannot consciously control the movement of food in the alimentary canal or pumping of blood through heart. These actions are however directly under the control of the brain. On the other hand, the reflex actions such as closing of eyes immediately when bright light is focused show sudden response and do not involve any thinking. This means that unlike involuntary actions, the reflex actions are not under the control of brain.
The reflex arc connections between the input and output nerves meet in a bundle in the spinal cord. In fact, nerves from all over the body meet in a bundle in the spinal cord on their way to the brain. In case of any injury to the spinal cord, the signals coming from the nerves as well as the signalRead more
The reflex arc connections between the input and output nerves meet in a bundle in the spinal cord. In fact, nerves from all over the body meet in a bundle in the spinal cord on their way to the brain. In case of any injury to the spinal cord, the signals coming from the nerves as well as the signals coming to the receptors will be disrupted.
What is the difference between the manner in which movement takes place in a sensitive plant and the movement in our legs?
Movement in sensitive plants: 1. The movement that takes place in a sensitive plant such as Mimosa pudica occurs in response to touch (stimulus). 2. For this movement, the information is transmitted from cell to cell by electrochemical signals as plants do not have any specialised tissue for conductRead more
Movement in sensitive plants:
See less1. The movement that takes place in a sensitive plant such as Mimosa pudica occurs in response to touch (stimulus).
2. For this movement, the information is transmitted from cell to cell by electrochemical signals as plants do not have any specialised tissue for conduction of impulses.
3. For this movement to occur, the plant cells change shape by changing the amount of water in them.
Movement in our legs:
1. Movement in our legs is an example of voluntary actions.
2. The signal or messages for these actions are passed to the brain and hence are consciously controlled.
3. In animal muscle cells, some proteins are found which allow the movement to occur.
Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.
Nervous system mechanism: 1. The information is conveyed in the form of electric impulse. 2. The axons and dendrites transmit the information through a coordinated effort. 3. The flow of information is rapid and the response is quick. 4. Its effects are short lived. Hormonal system mechanism: 1. TheRead more
Nervous system mechanism:
1. The information is conveyed in the form of electric impulse.
2. The axons and dendrites transmit the information through a coordinated effort.
3. The flow of information is rapid and the response is quick.
4. Its effects are short lived.
Hormonal system mechanism:
See less1. The information is conveyed in the form of chemical messengers.
2. The information is transmitted or transported through blood.
3. The information travels slowly and the response is slow.
4. It has prolonged effects.
How does chemical coordination occur in plants?
Animals have a nervous system for controlling and coordinating the activities of the body. But plants have neither a nervous system nor muscles. Plants respond to stimuli by showing movements. The growth, development, and responses to the environment in plants is controlled and coordinated by a specRead more
Animals have a nervous system for controlling and coordinating the activities of the body. But plants have neither a nervous system nor muscles. Plants respond to stimuli by showing movements. The growth, development, and responses to the environment in plants is controlled and coordinated by a special class of chemical substances known as hormones. These hormones are produced in one part of the plant body and are translocated to other needy parts. For example, a hormone produced in roots is translocated to other parts when required. The five major types of phytohormone are auxins, gibberellins, cytokinins, abscisic acid, and ethylene. These phytohormones are either growth promoters (such as auxins, gibberellins, cytokinins, and ethylene) or growth inhibitors such as abscisic acid.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
How are involuntary actions and reflex actions different from each other?
Involuntary actions cannot be consciously controlled. For example, we cannot consciously control the movement of food in the alimentary canal or pumping of blood through heart. These actions are however directly under the control of the brain. On the other hand, the reflex actions such as closing ofRead more
Involuntary actions cannot be consciously controlled. For example, we cannot consciously control the movement of food in the alimentary canal or pumping of blood through heart. These actions are however directly under the control of the brain. On the other hand, the reflex actions such as closing of eyes immediately when bright light is focused show sudden response and do not involve any thinking. This means that unlike involuntary actions, the reflex actions are not under the control of brain.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
Which signals will get disrupted in case of a spinal cord injury?
The reflex arc connections between the input and output nerves meet in a bundle in the spinal cord. In fact, nerves from all over the body meet in a bundle in the spinal cord on their way to the brain. In case of any injury to the spinal cord, the signals coming from the nerves as well as the signalRead more
The reflex arc connections between the input and output nerves meet in a bundle in the spinal cord. In fact, nerves from all over the body meet in a bundle in the spinal cord on their way to the brain. In case of any injury to the spinal cord, the signals coming from the nerves as well as the signals coming to the receptors will be disrupted.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/