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प्रश्न
Differentiate between the Rods and Cones of Retina (Type of pigment)
उत्तर
Rods and Cones of Retina (Type of pigment):
| Rods | Cones |
| Rods produce rhodopsin. | Cones produce iodopsin. |
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संबंधित प्रश्न
Write short notes on the following Ear ossicles
Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thunder is heard later. Can you explain?
State the exact location of the Ciliary body
(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.
State the main function of the Suspensory ligament of the eye
Mention if the following statement is true (T) or false (F) Give reason.
Malleus incus and stapes are collectively called the ear ossicles.
Where is the Cochlea located? Briefly mention its function.
With reference to the human ear, answer the question that follow:
Name the part of the ear associated with
(1) static balance
(2) hearing
(3) dynamic balance.
Write whether the following is true or false:
The part of the ear associated with balance is the cochlea.
Differentiate between:
The middle ear and Inner ear.
Mention, if the following statement is True or False
Cochlea of the ear is concerned with the sense of balance.
State the Location:
Semicircular canals
Choose the Odd One Out:
The part of the ear that collects the sound from the surroundings is ______.
Select the option with incorrect identification:
______ is the smallest bone in the human body.
X is known as the balancing organ of ear.
Choose the correct option for X.
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Semi-circular canal : Ampulla :: Cochlea : ______.
Name the part of the inner ear that is responsible for static balance in human beings.
The figure given below shows the principal parts of a human ear. Study the diagram and answer the following questions.
 |
- Label the parts 1 to 8.
- State the role of parts 6, 7 and 8.
- Why is it harmful to use a sharp object to remove ear wax? Mention the number and name of the part involved.
