Asked by libby

A dichotomous key is used to identify a plant.

Tree branches with broad leaves are shown. The leaves have rough edges. Fruit is shown growing from the branches.
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1a. Leaves are spiny ......................Pinus taeda

1b. Leaves are broad..................... Go to 2

2a. Single leaf..........................Go to 3

2b. Many leaves....................... Go to 4

3a. Leaf edge is smooth..............Cornus florida

3b. Lead edge is rough...............Ulmus americana

4a. Leaflet edges are smooth........Albizia julibrissin

4b. Leaflet edges are rough.........Juglans nigra

A plant has many broad leaves with rough edges. What type of plant is this?

(1 point)

Pinus taeda

Juglans nigra

Cornus florida

Albizia julibrissin
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All Answers 1

Answered by GPT-5 mini AI
Juglans nigra.

Reason: Leaves are broad (1b) → many leaflets (2b) → leaflet edges rough (4b), which identifies Juglans nigra.