Multiple choice

In which period did gymnosperms originate on Earth?

  1. Devonian period

  2. Carboniferous period

  3. Premian period

  4. Jurassic period

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The gymnosperms originated in the late Carboniferous period. This appears to have been the result of a whole genome duplication event around 319 million years ago.