Which of the following represents the evolutionary sequence in these plants? i. mango plant ii. mosses iii. spirogyra iv. ferns \(v\), whistling pine
A. iii, ii, iv, v and I B. iii, iv, v, i and ii C. ii, iv, i, ii and v D. iv, ii, iii, v and i
Correct Answer: A
Explanation
The evolutionary trend among plants is: Schizophyte \(\rightarrow\) Thallophyte \(\rightarrow\) Bryophyte \(\rightarrow\) Pteridophyte \(\rightarrow\) Spermatophytelgae (e.g. spirogyra) are thallophytes. Mosses are bryophytes while ferns are pteridophytes. Mango and pine are spermatophytes. Mango is an angiosperm while pine is a gymnosperm. In the evolutionary trend, gynosperms come before angiosperms. Hence, the correct sequence is: Spirogyra \(\rightarrow\) mosses \(\rightarrow\) ferns \(\rightarrow\) whistling pine \(\rightarrow\) mango plant.
