What do scientists examine when they use a dichotomous key?(1 point)
Responses
observable features of an organism
observable features of an organism
behaviors of an organism
behaviors of an organism
kinds of foods eaten by an organism
kinds of foods eaten by an organism
environment of an organism
observable features of an organism
Use the dichotomous key to answer the question.
Dichotomous Key
1a. Needle leaves: go to step 2
1b. Non-needles leaves: go to step 3
2a. Needles are grouped in clusters: pine tree
2b. Needles are individually arranged: spruce tree
3a. Simple (individual) leaves: go to step 4
3b. Compound leaves (leaflets): go to step 5
4a. Leaf edge is smooth and lobed: oak tree
4b. Left edge is rough and tooth-like: elm tree
5a. Leaflets are attached at one point: chestnut tree
5b. Leaflets are attached at many points: walnut tree
Examine the leaf.
Non-needle green leaf with compound leaves attached at the center.
What kind of tree is the leaf from?
(1 point)
Responses
chestnut
chestnut
elm
elm
walnut
walnut
oak
oak
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