EASY
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The size of aperture of the of eye is controlled by iris.

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Important Questions on Neural Control and Coordination

MEDIUM
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Explain the mechanism of hearing.
MEDIUM
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Draw a labelled diagram of the internal ear and explain the mechanism of hearing.
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Name the point on Retina where both rods and cones are absent.
HARD
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Choose the correct statements.
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
In mammals, quadrate is modified as
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Write any two diseases/defects of the ear.
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
When one goes from a brightly lit area to a dimly lit room our eyes adjusts slowly, thereby regaining the clarity of vision. Which ONE of the following explains this process?
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Which of the following statements is correct?
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
The transparent lens in the human eye is held in its place by
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
In a blind spot of the human eye
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
The photosensitive compound in the human eye is made up of:
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
In the mammalian eye, the 'fovea' is the the center of the visual field, where:
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Which eye pigment helps animals to see in dim light? 
HARD
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Draw a labelled diagram of the internal structure of the human ear.
HARD
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Which of the following statement is correct?
(i) The rods contain a purplish-red protein called the rhodopsin.
(ii) The photopigments are embedded in the membrane discs of the inner segment.
(iii) Retinal is a derivative of vitamin A.
(iv) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin.
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
How do Rods and Cones of human Dye differ from each other chemically and functionally ?
MEDIUM
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing

Match the following columns and select the correct option:-

Column-I column-II
(a) Rods and cones (i) Absence of photoreceptor cells
(b) Blind spot (ii) Cones are densely packed
(c) Fovea (iii) Photoreceptor cells
(d) Iris (iv) Visible coloured portion of the eye
EASY
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing

Which statement is CORRECT regarding blind spot in human eye?

It ___________.

MEDIUM
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
Which one of the following statements is not correct?
MEDIUM
Biology>Human Physiology>Neural Control and Coordination>Sensory Reception and Processing
A gymnast is able to balance his body upside down even in the total darkness because of: