The photo shows the leaves from one type of vascular
plant. Use the dichotomous key to identify the type of plant
that has these leaves.
1a The leaf is broad and flat.
Go to 3.
1b The leaf is needle-like.
Go to 2.
2a The leaf is a sharp, yellow spine.
Cactus
2b
The leaves are stiff and green
and set at angles to the branch.
Fir
3a The leaf has a smooth edge.
Laurel
3b
The leaf does not have
a smooth edge.
Go to 4.
4a The leaf has a sawtooth edge.
Elm
4b The leaf has a lobed (wavy) edge. English oak