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Ladder-like nervous system is seen in
Option: 1
Earthworm
Option: 2
Flatworm
Option: 3
Roundworm
Option: 4
All of the above
Answers (1)
Nervous System of Platyhelminthes:
- The Platyhelminthes show cephalization, i.e., the grouping of neurons at the anterior end of the body.
- They show a characteristic ladder-like nervous system.
- There is a pair of nerve cords that are connected through numerous nerves transversely, known as transverse commissures.
- A concentration of ganglion is present at the anterior end called cerebral ganglia which have chemosensitive and photosensitive cells (eyespots).
The Platyhelminthes show cephalization, i.e., the grouping of neurons at the anterior end of the body. They show a characteristic ladder-like nervous system.
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