Question

Arrange the following in the correct sequence of their evolution and select the correct option:

1. Seaweed
2. Invertebrates
3. Jawless fish

Options

• (i), (ii), (iii)

• (i), (iii), (ii)

• (ii), (iii), (i)

• (ii), (i), (iii)

Answer 1

(ii), (iii), (i)

Explanation:

Evolutionary history shows that invertebrates were the first of these groups to diversify, appearing in the late Pre-Cambrian era. They were followed by the evolution of jawless fish (the first vertebrates) around 500 million years ago, while seaweeds (multicellular marine algae) became prominent in the fossil record slightly later, around 320 million years ago.