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ICSE Class X Biology 2017 Papers

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The diagram given below is an external view of the human brain. Study the same and answer the questions that follow :
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Question : 99 of 101
Marks: +1, -0
What are the structural and functional units of the brain ? How are the parts of these units arranged in AA and CC ?
Solution:  
Neuron
In A (cerebrum) - The cytons are located outside and axons inside
In CC (spinal cord) - The position of axons is towards the periphery while position of cytons is in the centre of spinal cord.
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