Question

Animals belonging to phylum Platyhelminthes possess a rudimentary

• A. Nervous system
• B. Circulatory system
• C. Respiratory system
• D. Reproductive system

Answer 1

The correct option is A Nervous system

The nervous system of Platyhelminthes or flatworms is rather simple and consists of a few nerve cords running along the length of the body with connections in between and a central ganglion present at the anterior end of the body. The anterior region of the worm also has a cluster of photosensory and chemosensory cells. Compared to their nervous system, they have well developed circulatory, respiratory, and reproductive systems.

So, the correct answer is 'Nervous system'.