Step 1: Evolutionary sequence of organisms.
The evolution of life forms is a step-by-step process. Seaweeds, invertebrates, and jawless fish represent different stages of evolutionary development.
Step 2: Correct sequence of evolution.
- (i) Seaweed: Seaweeds are among the earliest plant-like organisms that emerged in the evolutionary timeline.
- (ii) Invertebrates: Invertebrates followed seaweeds in the evolutionary timeline, representing animals without backbones.
- (iii) Jawless fish: Jawless fish evolved after invertebrates, marking the transition from invertebrates to vertebrates.
Step 3: Conclusion.
Therefore, the correct sequence of evolution is (i) Seaweed, (ii) Invertebrates, (iii) Jawless fish.
Final Answer: (i), (ii), (iii).