Sense Organs — Important Questions
ICSE · Class 10 · Biology
42 important questions from Sense Organs for ICSE Class 10 Biology, with answers. Includes multiple choice and multiple correct questions.
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Which of the following are functions of tears? (Select all correct answers)
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Clean the eye from dust, Kill bacteria, Lubricate the eye
Tears contain lysozyme enzyme that kills bacteria, wash away dust particles, and lubricate the eye surface. They don't focus light or control pupil size - these are functions of lens and iris respectively.
Which parts of the ear help in maintaining balance? (Select all correct answers)
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Semicircular canals, Utriculus, Sacculus
Semicircular canals maintain dynamic equilibrium, while utriculus and sacculus maintain static balance. Cochlea is for hearing and eardrum transmits sound vibrations.
What causes night blindness?
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Lack of rhodopsin due to vitamin A deficiency
Night blindness occurs due to deficiency of vitamin A, which is needed for rhodopsin formation in rod cells. Rhodopsin is essential for vision in dim light.
The transparent part of the eye that allows light to enter is called:
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Cornea
Cornea is the transparent anterior part of the eye that allows light to enter. It has no blood supply and is one-sixth of the total eyeball. Pupil is an opening, not a structure.
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