ICSE Class 10 Nervous System and Sense Organs — Mock Test (2027)

Free online mock test for Nervous System and Sense Organs (ICSE Class 10 Biology) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.

Sample questions

1. 1.In which fluid does the membranous labyrinth of the inner ear float?
   • A.Endolymph
   • B.Perilymph
   • C.Cerebrospinal fluid
   • D.Aqueous humour
2. 2.

   (i)	Choroid	Sclerotic
   	Absorbs light and prevention of total internal reflection that may cause blurring of image.	Provides and maintains shape of eye ball.

   (ii)	Dynamic balance	Static balance
   	The sensory cells in cristae of internal ear are concerned with balance while body is in motion.	The sensory cells in ear which are located in Maculae of vestibule are responsible for static balance in human beings by detecting change in the head or body at rest. Concerned with positional balance with respect to gravity.

   (iii)	Rod cells	Cone cells
   	Rhodospin	Iodospin

   (iv)	Myopia	Hypermetropia
   	Lens too convex.	Flattened condition of lens.

3. 3.Match the following parts of the ear with their descriptions:

   Column A (Parts of Ear)	Column B (Descriptions)
   1. Pinna	a. Connects middle ear to throat
   2. Ear ossicles	b. Spiral-shaped structure for hearing
   3. Eustachian tube	c. Collects sound waves
   4. Cochlea	d. Three tiny bones in the middle ear
   5. Semicircular canals	e. Structures for maintaining body balance

4. 4.Cerebrum is a part of
   • A.forebrain
   • B.mid brain
   • C.neuron
   • D.hind brain
5. 5.Which nerve transmits sound impulses from the ear to the brain?
   • A.Optic nerve
   • B.Olfactory nerve
   • C.Auditory nerve
   • D.Vagus nerve