Question:
Which of the following is INCORRECT regarding the nervous system of Planaria?
Which of the following is INCORRECT regarding the nervous system of Planaria?
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Planaria is a flatworm of phylum Platyhelminthes, not Aschelminthes.
Updated On: Nov 12, 2026
- It is the most primitive animal having CNS
- It consists of U-shaped brain
- It belongs to the phylum Aschelminthes.
- The eyes are located on dorsal side of the brain
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Planaria is a free-living flatworm. Its nervous system is the simplest central nervous system in the animal kingdom.
Step 2: Check the statements
Planaria is the most primitive animal with a CNS. Its brain is U-shaped. A pair of eye spots lies on the dorsal side of the brain.
Step 3: Find the wrong statement
Planaria belongs to phylum Platyhelminthes, not Aschelminthes (roundworms), so option (C) is incorrect.
Final Answer:
The incorrect statement is that Planaria belongs to phylum Aschelminthes. \[ \boxed{\text{(C) }\text{It belongs to the phylum Aschelminthes.}} \]
Planaria is a free-living flatworm. Its nervous system is the simplest central nervous system in the animal kingdom.
Step 2: Check the statements
Planaria is the most primitive animal with a CNS. Its brain is U-shaped. A pair of eye spots lies on the dorsal side of the brain.
Step 3: Find the wrong statement
Planaria belongs to phylum Platyhelminthes, not Aschelminthes (roundworms), so option (C) is incorrect.
Final Answer:
The incorrect statement is that Planaria belongs to phylum Aschelminthes. \[ \boxed{\text{(C) }\text{It belongs to the phylum Aschelminthes.}} \]
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