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प्रश्न
Give scientific reasons: We cannot distinguish colours in moonlight.
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उत्तर
Cone cells in the retina are responsibe for colour vision. They are functional only in bright light. Moon light is unable to stimulate the cone cells; however, the rod cells respond to dim light. Hence, we can see in moon light but cannot distinguish colours.
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संबंधित प्रश्न
(i) Draw a well labelled diagram of the membranous labyrinth found in the inner ear.
(ii) Based on the diagram drawn above in (i) give a suitable term for each of the following descriptions :
1. The sensory cells that helps in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.
fill in the blanks with suitable functions: Ciliary body and __________.
Name the following:
The tube which connects the cavity of the middle ear with the throat.
Where is the Cochlea located? Briefly mention its function.
Name the following:
Part of internal ear related to balance.
The diagram alongside represents the structure of the human ear.
(i) Write the names of the parts labelled a to g.
(ii) State briefly the functions of the parts b, d, and g.
(iii) Name the main division of the ear.
(iv) Which is the smallest bone in the human body?
(v) What is labyrinth?
The figure below is the sectional view of a part of the skull showing a sense organ:
What do you call the part shown in the form of a spiral? What is its function?
Describe the structure and function of the human ear?
X is known as the balancing organ of ear.
Choose the correct option for X.
The spiral organ possessing sensory cells for hearing is ______.
