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111. Are rods and cones evenly distributed over the entire surface of the retina? At which point on the retina is no image formed ?

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112. Which nerve tract connects the right and left hemispheres of cerebrum ? Into what four lobes is each hemisphere divided ?

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113. Chemical synapse is more advantageous than electrical synapse. Discuss.

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114. Explain resting membrane potential.

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115. Differentiate between sympathetic and parasympathetic nervous system.

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Conditioned reflex

Unconditioned reflex

It is obtained alter the birth of an organism with proper training.

It is developed under the action stimulus.

It varies with individual.

It is inherited immediately after birth.

It occurs and for this there is no need of previous stimulus.

It is specific.

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117. Differentiate between Preganglionic and postganglionic nerve fibres.

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118. Differentiate between Adrenergic and cholinergic fibres.

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119. Briefly describe the structure of the following

(a) Brain.

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120. Briefly describe the structure of the following
(b) Eye.

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