How are the Cytons and Axons of neurons arranged in the following?
(a) Cerebrum
(b) Spinal Cord
(b) Spinal Cord
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Solution and Explanation
Top Questions on sense organs
Rajat Singh was working as a supervisor in a stone quarry where rock, sand and gravel are extracted by techniques like digging, drilling, and blasting. As the years rolled by, Rajat started facing a loss in hearing. The high decibel sounds had damaged a part of his internal ear, though the tympanic membrane was intact.
(a) Give the collective term for the structure located in the internal ear.
(b) Name the sensory organ in the Cochlea which was damaged for Rajat Singh.
(c) What kind of pollution do the workers face in the stone quarry?
- ICSE Class X board - 2026
- Biology
- sense organs
Tara's grandmother is 70 years old and has a passion for embroidery. She faces difficulty in threading the needle as the eye of the needle appears blurred. The ophthalmologist diagnosed it as an age-related disorder.
(a) Name the eye disorder she is suffering from.
(b) How can the above defect be corrected?
(c) Where is the image formed in the above disorder?
- ICSE Class X board - 2026
- Biology
- sense organs
Karan was standing on a high stool and cleaning the ceiling fan.
He suddenly loses balance and sustains a head injury. An examination reveals that his pupils have lost the capacity to constrict in bright light. Which structure has been damaged?
- ICSE Class X board - 2026
- Biology
- sense organs
Bharat woke up late in the morning and missed the school bus.
This situation stimulated the nerves of the sympathetic system which resulted in:
- ICSE Class X board - 2026
- Biology
- sense organs
Copy the diagram given below.
(a) Name the structure.
(b) Label Gray matter and White matter.
- ICSE Class X board - 2026
- Biology
- sense organs
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Reason (R): An abnormal increase in the number of WBCs causes blood cancer.
- ICSE Class X board - 2026
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- ICSE Class X board - 2026
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- ICSE Class X board - 2026
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- ICSE Class X board - 2026
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During the ventricular systole, the atrioventricular valves (P) ________ and the semilunar valves (Q) _________.
- ICSE Class X board - 2026
- body fluids and circulation