Accommodation is the ability of the retina of the eye to adjust the focal length as needed.

Write the names of two structural parts of axon.

Which of the following is not a structural feature of an Axon? (a) Node of Ranvier (b) Myelin sheath (c) Nissl granule (d) Schwann cell

Choose the odd one and write it: Olfactory nerve, Vagus nerve, Optic nerve, Auditory nerve

The focal length of lens increases in case of seeing distant objects.

Reflex action is fast, spontaneous and ____.

Decide which of the following sequence is correct — (a) Receptor → Effector → Sensory Nerve → Motor Nerve → Nerve Centre (b) Receptor → Nerve Centre → Motor Nerve → Sensory Nerve → Effector (c) Receptor → Sensory Nerve → Nerve Centre → Motor Nerve → Effector (d) Receptor → Motor Nerve → Effector → Sensory Nerve → Nerve Centre

Match the words of Column-A with that of Column-B and select which of the following options is correct Column-A Column-B A. CSF i. Protects Central Nervous System from mechanical injury B. Meninges ii. Helps in the formation of the myelin sheath C. Neuroglia iii. Acts as a shock absorber (a) A-(ii) B-(iii) C-(i) (b) A-(iii) B-(i) C-(ii) (c) A-(i) B-(ii) C-(iii) (d) A-(i) B-(iii) C-(ii)

Select the correct pair — (a) Sclera—Absorbs excess light within the eyeball (b) Choroid—Provides definite shape of the eyeball (c) Lens—Causes refraction of light and accomplishes accommodation (d) Retina—Holds the lens with the help of the suspensory ligaments

The nucleated oval ____ cells occur between Medullary Sheath and Neurilemma of the axon of a neurone.

Consider the differences between hormone and nervous system mentioned below and choose which ones are correct: Hormone Nervous System I. Hormone is physical coordinator Nervous system is chemical coordinator II. The function of hormone occurs at a slow pace The function of nervous system is quick and instant III. The effect of hormone is long lasting The effect of nervous system is short lasting IV. Hormone remains unchanged after its function is over Nervous system gets destroyed after its function is over Options: (a) I, IV (b) I, III (c) II, III (d) II, IV

Choose the correct pair from the following: (a) Lens - Accomplishes accommodation by changing the curvature of its plane (b) Retina - Holds the lens with the help of the suspensory ligament (c) Cornea - Secretes aqueous humor (d) Choroid - Helps to maintain the shape of the eyeball