7th science 12 Word Scramble
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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 |
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Harrison83
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