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Science Test 11
Mr. G
44
Science
7th Grade
05/01/2013

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Term
1. Location of tree’s phloem
Definition
Bark
Term
2. Main tissue of a tree trunk
Definition
Wood
Term
3. Small pore that allows air to enter a stem
Definition
Lenticel
Term
Layer of growth cells just below the bark of a tree
Definition
Vascular cambium
Term
5. Place on a stem that leaves grow out of
Definition
Node
Term
6. Central core of a young woody stem
Definition
Pith
Term
7. Rough outer covering of a tree
Definition
Bark
Term
8. Waxy protective layer of a leaf
Definition
Cuticle
Term
9. Location from which a tree grows in length
Definition
Terminal bud
Term
10. Layer of cells that forms at the base of a petiole to sever a leaf from a branch
Definition
Abscission layer
Term
11. Top leafy portion of a fully grown tree
Definition
Crown
Term
12. The tissue that wood is composed of
Definition
Xylem
Term
13. Type of forest that grows up after a virgin forest is cut
Definition
Secondary forest
Term
14. Branch of forestry that deals with the care and culture of forest trees
Definition
Silviculture
Term
15. Broadleaf trees are also called
Definition
Harwood trees
Term
16. Hard, dead, clogged wood at the center of a tree
Definition
Heartwood
Term
17. Term for a system or object that produces carbon dioxide
Definition
Carbon source
Term
18. Oldest living organisms on earth
Definition
Bristlecone pines
Term
19. Which leaf pigment gives leaves a yellow color
Definition
Xanthophyll
Term
20. Tallest tree species
Definition
Coast redwood
Term
21. Which American forest region extends along the Mississippi River
Definition
Bottomland hardwood forest
Term
22. Tree that loses its leaves in the fall and stays bear all winter
Definition
Deciduous
Term
23. One layer of springwood and on layer of summerwood form what
Definition
Annual growth ring
Term
24. Thick, small leaves at the tops of trees
Definition
Sun leaves
Term
25. What kind of forest is one that has not been influenced by man or used for timber
Definition
Old growth forest
Term
26. A tree’s growth in diameter
Definition
Secondary growth
Term
27. Scientists crossbreed trees with desirable characteristics to develop what kind of trees
Definition
Supertrees
Term
28. Tree that produces male and female reproductive parts on separate trees
Definition
Dioecious
Term
29. A young tree is called
Definition
Sapling
Term
30. What is the most destructive type of forest fire
Definition
Crown fire
Term
31. Which method of deforestation involves removing all but a few selected trees from a given area
Definition
Seed tree method
Term
32. What kind of branching has several main branches close to the ground
Definition
Spreading
Term
33. All that remains on a branch after a leaf falls off
Definition
Leaf scars
Term
34. A tree’s living, functioning wood
Definition
Sapwood
Term
35. Foresters deliberately setting fire to a forest under controlled conditions
Definition
Prescribed burn
Term
36. Abnormal tree growth caused by insects
Definition
Gall
Term
37. Groups of tall plants or trees
Definition
Stands
Term
38. Northern and southern limit at which trees grow
Definition
Tree line
Term
39. Intensive forest management system that is intended to cause forests to grow more high quality trees that mature more quickly than they normally would is
Definition
Sustained yield
Term
40. Forest’s thick top layer of interlaced leaves is
Definition
Canopy
Term
41. Name the two types of tree roots
Definition
Taproots and spreading roots
Term
42. Who was the first head of the US Forest Service
Definition
Gifford Pinchot
Term
43. List the 3 functions of tree roots
Definition
Absorbing water and minerals, anchoring the tree, and storing food
Term
44. Which method of deforestation involves removing all the trees from areas that are 100 acres or less
Definition
Block cutting
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