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प्रश्न
Why have reflex arcs evolved in animals?
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उत्तर
Reflex arcs have evolved in animals primarily because the thinking process of the brain is not fast enough to respond immediately to certain stimuli that require quick action for survival or response.
Many animals, especially simpler ones, lack a complex neuron network capable of fast thinking. Reflex arcs provide a more efficient way of functioning by enabling quicker responses to stimuli, bypassing the slower thinking processes.
This efficiency is vital for survival, allowing animals to respond instantly to dangers or other important stimuli. Even in animals with complex neural networks, reflex arcs remain crucial for ensuring immediate and efficient responses.
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संबंधित प्रश्न
Which part of the eye contains cells which are sensitive to light?
Fill in the following blanks with suitable words :
Our.............system allows us to react to our surroundings. Information from receptors passes along...........neurons to our brain. Our brain sends impulses along..........neurons to our muscles.
What are the various sense organs in our body?
What is the difference between a voluntary and an involuntary action? Which kind of action is digestion? Explain your choice.
What is a reflex action? Explain with the help of an example.
All the voluntary actions of our body are controlled by :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
Differentiate between the following pair of terms:
Stimulus and impulse
State whether the following is
The sudden application of brakes without thinking
Mention, if the following statement is True or False
Reflex action involves brain
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
