test your tree knowledge
answer the following statements as either being true or false.
to see the answer to each question, simply click the on the question.
1. trees are the largest, longest living, immobile life forms upon the plant earth.
2. although there is no clear distinction between a tree and a shrub, you can safely say that a tree is a woody plant, having a single stem, a definite crown shape, growing to at least 15 feet tall and having a trunk diameter (at 41/2 feet above the ground) of at least 3 inches.7. there are only two types of trees: evergreens and deciduous
3. trees can be found growing anywhere on the earth except in deserts, the polar regions and above 10,000 feet.
4. the reason trees cannot grow above 10,000 feet is because the air is too thin.
5. many trees do not have plumbing tubes (also called vascular elements) that carry water and nutrients up and down the tree.
6. trees that lose all of their leaves before winter are called deciduous trees.
8. all evergreen trees have narrow leaves called needles.
9. all evergreens lose their oldest leaves/needles at different times of the year depending upon the species.
10. evergreen needles stay alive for as long as the tree lives.
11. trees have three organs which are: roots, stems and leaves.
12. trees have the ability to heal injured and infected wood tissue.
13. decay in trees can occur only after its bark has been injured or removed.
14. all trees have vascular tubes which carry water and nutrients upwards from their roots to all parts of the tree and end up in the leaves.
15. water, nutrients and sap can move only up or down within a tree.
16. the primary growth of trees is called the cambium which is located between the wood and the bark.
17. bark has two parts: the inner bark (phloem) which is living and the outer bark (cork bark) which consists of dead cells.
18. trees have one cambium which is located between the inner bark and the wood tissue.
19. you can tell the age of all trees, except palm trees, by counting their growth rings.
20. trees do not grow on the great plains because of the harsh winters and lack of rain during the spring of the year.
21. trees are the ultimate deciders of land use, whether it be their absence or presence.
"we're physicians not morticians"
robert d'ambrosio, plant pathologist
235 main street
eastchester, ny 10709
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