The movement of plant in response to light is called phototropism. Stem shows positive phototropism as follows: When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one side of the plant, auxin diffuses towaRead more
The movement of plant in response to light is called phototropism. Stem shows positive phototropism as follows: When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one side of the plant, auxin diffuses towards the shady side of the shoot. This concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light. Thus, the plant appears to bend towards light.
Neurons are the functional units of the nervous system. The three main parts of a neuron are axon, dendrite and cell body. Functions of the three parts of a neuron: • Axon: It conducts messages away from the cell body. • Dendrite: It receives information from axon of another cell and conducts the meRead more
Neurons are the functional units of the nervous system. The three main parts of a neuron are axon, dendrite and cell body.
Functions of the three parts of a neuron:
• Axon: It conducts messages away from the cell body.
• Dendrite: It receives information from axon of another cell and conducts the messages towards the cell body.
• Cell body: It contains nucleus, mitochondria, and other organelles. It is mainly concerned with the maintenance and growth.
Receptors are sensory structures (organs/tissues or cells) present all over the body. The receptors are either grouped in case of eye or ear, or scattered in case of skin. Functions of receptors: They sense the external stimuli such as heat or pain. They also trigger an impulse in the sensory neRead more
Receptors are sensory structures (organs/tissues or cells) present all over the body. The receptors are either grouped in case of eye or ear, or scattered in case of skin. Functions of receptors:
They sense the external stimuli such as heat or pain.
They also trigger an impulse in the sensory neuron which sends message to the spinal cord. When the receptors are damaged, the external stimuli transferring signals to the brain are not felt. For example, in the case of damaged receptors, if we accidentally touch any hot object, then our hands might get burnt as damaged receptors cannot perceive the external stimuli of heat and pain.
(b) The gap between two neurons is called a synapse. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
(b) The gap between two neurons is called a synapse.
How does phototropism occur in plants?
The movement of plant in response to light is called phototropism. Stem shows positive phototropism as follows: When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one side of the plant, auxin diffuses towaRead more
The movement of plant in response to light is called phototropism. Stem shows positive phototropism as follows: When growing plants detect light, a hormone called auxin, synthesised at the shoot tip, helps the cells to grow longer. When light is coming from one side of the plant, auxin diffuses towards the shady side of the shoot. This concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light. Thus, the plant appears to bend towards light.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
Draw the structure of a neuron and explain its function.
Neurons are the functional units of the nervous system. The three main parts of a neuron are axon, dendrite and cell body. Functions of the three parts of a neuron: • Axon: It conducts messages away from the cell body. • Dendrite: It receives information from axon of another cell and conducts the meRead more
Neurons are the functional units of the nervous system. The three main parts of a neuron are axon, dendrite and cell body.
Functions of the three parts of a neuron:
• Axon: It conducts messages away from the cell body.
• Dendrite: It receives information from axon of another cell and conducts the messages towards the cell body.
• Cell body: It contains nucleus, mitochondria, and other organelles. It is mainly concerned with the maintenance and growth.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
What is the function of receptors in our body? Think of situations where receptors do not work properly. What problems are likely to arise?
Receptors are sensory structures (organs/tissues or cells) present all over the body. The receptors are either grouped in case of eye or ear, or scattered in case of skin. Functions of receptors: They sense the external stimuli such as heat or pain. They also trigger an impulse in the sensory neRead more
Receptors are sensory structures (organs/tissues or cells) present all over the body. The receptors are either grouped in case of eye or ear, or scattered in case of skin. Functions of receptors:
They sense the external stimuli such as heat or pain.
They also trigger an impulse in the sensory neuron which sends message to the spinal cord. When the receptors are damaged, the external stimuli transferring signals to the brain are not felt. For example, in the case of damaged receptors, if we accidentally touch any hot object, then our hands might get burnt as damaged receptors cannot perceive the external stimuli of heat and pain.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
The gap between two neurons is called a
(b) The gap between two neurons is called a synapse. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
(b) The gap between two neurons is called a synapse.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
Which of the following is a plant hormone?
(d) Cytokinin is a plant hormone. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/
(d) Cytokinin is a plant hormone.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-10/science/chapter-7/