In the thirteenth century A.D., features of stem structure were used to recognize the following two groups: ________.
A) monocots and dicots
B) ferns and conifers
C) conifers and flowering plants
D) mosses and conifers
E) All of these answers are correct.

Question

Quizplus · Accepted Answer

In the thirteenth century A.D., botanists began distinguishing between two major groups of flowering plants based on the number of seed leaves (cotyledons) they have upon germination: monocots, which have one seed leaf, and dicots, which have two. This classification is rooted in observations of stem structure among other characteristics.

In the Thirteenth Century A