The question asks about the plant modifications related to different stem structures.
Let's analyze the modifications for each plant:
- Potato: The potato plant produces tubers as modifications of its stem.
- Ginger: Ginger produces rhizomes, which are underground stem modifications.
- Zaminkand: This plant produces tubers, similar to potatoes.
- Asparagus: Asparagus has cladophylls, which are stem-like structures that carry out photosynthesis.
- Agave: Agave produces bulbils, a type of bulb-like structure that forms new plants.
- Nerium: Nerium has stolons, which are horizontal stems that grow above ground and form new plants.
Thus, the correct sequence of plants that shows the respective stem modifications is: Potato, Ginger, Zaminkand, Asparagus, Agave, Nerium.
Therefore, the correct answer is: (3) Potato, Ginger, Zaminkand, Asparagus, Agave, Nerium.