AY Honors/Trees - Advanced/Answer Key

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1. Have the Trees Honor.

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2. Collect, identify, press, and mount leaves of 35 different species of trees.

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3. Separately collect, press, mount, and label specimens that demonstrate the following terms:

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a. Serrate
The edges of the leaf have forward-pointing teeth.
b. Doubly serrate
The serrations on the edge of the leaf have serrations on them.
c. Entire
The entire edge of the leaf is smooth.
d. Crenate
The edges of the leaf have rounded teeth.
e. Dentate
The edges of the leaf have symmetrical teeth.
f. Lobe
The edges of the leaf have large, smooth indentations that do not go all the way to the centerline. (oaks)
g. Incise
h. Whorled
i. Opposite
j. Alternate
k. Pinnately compound
l. Triple compound (if possible)

4a. Describe the advantages in using the Latin or scientific names.

4b. Of what use are the two parts of a scientific name?

5. Name six families of trees in the angiosperm class and three families in the gymnosperm class.

6. Know and describe the function of leaves in the life of a tree.

7. Name the families of trees in your area which have opposite leaves.

8. Define the following terms:

a. Stipule
b. Petiole
c. Blade
d. Pitch
e. Heartwood
f. Sapwood
g. Springwood
h. Summerwood
i. Annual ring
j. Cambium
k. Xylem
l. Phloem

9. What families of trees have:

a. Thorns
b. Catkins
c. Winged seeds
d. Acorns
e. Pods
f. Capsules
h. Berries
g. Nuts

10. Identify ten deciduous trees by their “winter” characteristics, (features other than leaves) such as twig and bud, characteristic form, and growth habits.

References

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