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Question

In Planaria, the anterior aggregation of nerve cells is called as

A
Flame cells
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B
Ocelli
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C
Cerebral ganglia
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D
None of the above
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Solution

The correct option is C Cerebral ganglia
At the head of the planarian, there is a ganglion under the eyespots. The cerebral ganglia, a bilobed mass of nerve tissue, is sometimes referred to as the planarian brain. From the ganglion there are two nerve cords which extend the length of the tail. Hence, correct option is C.

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