Biology — Dichotomous Key: Plants
A key to the major plant groups.
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digraph PlantKey {
rankdir=TB;
node [shape=box, style=rounded];
Q1 [label="Produces seeds?"];
Q2 [label="Seeds in flowers/fruit?"];
Q3 [label="True roots and stems?"];
Flowering [label="Flowering plants"];
Conifers; Ferns; Mosses;
Q1 -> Q2 [label="yes"];
Q1 -> Q3 [label="no (spores)"];
Q2 -> Flowering [label="yes"];
Q2 -> Conifers [label="no (cones)"];
Q3 -> Ferns [label="yes"];
Q3 -> Mosses [label="no"];
}