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7th science 12
ch. 12
| Question | Answer |
|---|---|
| Which method of deforestation involves removing all the trees from areas that are 100 acres or less | block cutting |
| Who was the first head of the U.S. Forest Service | Gifford Pinchot |
| A young tree is called a | sapling |
| What is the most destructive type of forest fire | crown fire |
| Which method of deforestation involves removing all but a few selected trees from a given area | seed-tree method |
| A tree with ? branching has several main branches close to the ground | spreading |
| Groups of tall plants or trees are called | stands |
| The northern and southern limit at which trees grow is the | tree line |
| An 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 ? mannagement | sustained yield |
| a forest's thick top layer of interlaced leaves is the | canopy |
| Tree roots are either taproots or ? roots | spreading |
| the tissue that wood is composed of | xylem |
| the top leafy portion of a fully grown tree | crown |
| the layer of cells that form at the base of a petiole to sever a leaf from a branch | absission layer |
| the location from which a tree grows in length | terminal bud |
| a waxy protective layer on a leaf | cuticle |
| the rough outer covering of a tree | bark |
| the central core of a young woody stem | pith |
| a place on a stem that leaves grow out of | node |
| the layer of growth cells just below the bark of a tree | vascular cambium |
| a small pore that allows air to enter a stem | lenticel |
| the main tissue of a trunk | wood |
| the location of a tree's phloem | bark |
| the type of forest that grows up after a virgin forest is cut | secondary forest |
| the branch of forestry that deals with the care and culture of forest trees | silvicutlure |
| an abnormal tree growth caused by insects | gall |
| foresters deliberately setting fire to a forest under controlled conditions | prescribed burning |
| a tree's living, functioning wood | sapwood |
| all that remains on a branch after a leaf fall off | leaf scar |
| what describes a tree that loses its leaves in the fall and stays bare all winter | deciduous |
| which American forest region extends along the Mississippi River | bottomland hardwood forest |
| the tallest tree species is the | coast redwood |
| which leaf pigment gives leaves a yellow color | xanthophyll |
| the oldest living organisms on earth are | bristlecone pines |
| What is the technical term for a system or object that produces carbon dioxide | carbon source |
| the hard, dead, clogged wood at the center of a tree is | heartwood |
| Broadleaf trees are also called ? trees | hardwood |
| one layer of springwood and one layer of summerwood form an ? | annual growth ring |
| Thick small leaves at the top of trees are | sun leaves |
| an ?? forest is one that has not been influenced by man or used for timber | old-growth |
| a tree's increase in diameter is ??? growth | secondary |
| Scientists crossbreed trees with desirable characteristics to develop ??? that are more insect resistant and produce better wood than normal trees | supertrees |
| a tree that produces male and female reproductive parts on separate tress is | dioecious |
Created by:
Harrison83
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