Ans.
The first green plant (eukaryotic plant) was evolved from simple prokaryotic organisms. The events of plant evolution sequential order is as follow:
-The first autotrophs or chemotrophs that produced energy for chemical compounds, means life was able to synthesize its own food. Hence, the first event is option 5.5.
-The photosynthetic bacteria or blue-green algae were evolved that could perform photosynthesis and release of oxygen. Hence, the second event is option 2.2.
-The first single-celled eukaryotes (green algae) were appeared. Hence, the third event is option 7.7.
-The first multicellular eukaryotes were appeared. Hence, the fourth event is option 1.1.
-The first non-vascular, land plants or bryophytes were appeared. Hence, the fifth event is option 3.3.
-The Seedless vascular plants or pteridophytes were appeared. Hence, the sixth event is option 4.4.
-The seed plants (gymnosperms and angiosperms) were evolved. Hence, the last event was option 6.6.