Difference between revisions of "AY Honors/Trees - Advanced/Answer Key"
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< AY Honors | Trees - AdvancedAY Honors/Trees - Advanced/Answer Key
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==3. Separately collect, press, mount, and label specimens that demonstrate the following terms:== | ==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. | ;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. | ;b. Doubly serrate: The serrations on the edge of the leaf have serrations on them. | ||
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;g. Incise: | ;g. Incise: | ||
;h. Whorled: | ;h. Whorled: | ||
| − | ;i. Opposite: | + | ;i. Opposite: Leaves are connected to the stems, at nearly the same point, but on oppostite sides. (sumacs, hickorys, walnut) |
;j. Alternate: | ;j. Alternate: | ||
;k. Pinnately compound: | ;k. Pinnately compound: | ||
;l. Triple compound (if possible): | ;l. Triple compound (if possible): | ||
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| + | [[Image:Leaf morphology no title.png|thumb|700px]] | ||
| + | <br style="clear:both"> | ||
==4a. Describe the advantages in using the Latin or scientific names.== | ==4a. Describe the advantages in using the Latin or scientific names.== | ||
Revision as of 01:10, 30 September 2006
1. Have the Trees Honor.
2. Collect, identify, press, and mount leaves of 35 different species of trees.
3. Separately collect, press, mount, and label specimens that demonstrate the following terms:
- 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
- Leaves are connected to the stems, at nearly the same point, but on oppostite sides. (sumacs, hickorys, walnut)
- 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
