Forestry Unit Exam
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by Sadie Grasle
| 27 Questions
1
1 pt
Which layer provides structure for the tree (similar to a skeleton in an animal)?

A
B
C
D
E
2
1 pt
Only one layer of the tree grows, which is it?

A
B
C
D
E
3
1 pt
What is layer "d" called, and what does it do?

Bark - it protects the tree
Cambium - new cells are produced here
Phloem - sap and sugars flow through it
Xylem - water and nutrients flow through it
4
1 pt
Which tree has very thick bar
k, which protects it from fires?
Douglas Fir
Western Red Cedar
Western Hemlock
Big Leaf Maple
Red Alder
5
1 pt
Which tree has a symbiotic relationship with the bacteria Frankia, which removes nitrogen from the air and "fixes" it so that plants can use it.

Douglas Fir
Western Red Cedar
Western Hemlock
Big Leaf Maple
Red Alder
6
1 pt
Which tree has tiny cones, a droopy top, and very small needles that point in many directions?

Douglas Fir
Western Red Cedar
Western Hemlock
Big Leaf Maple
Red Alder
7
1 pt
Which tree has rot-resistant wood that is easy to split?

Douglas Fir
Western Red Cedar
Western Hemlock
Big Leaf Maple
Red Alder
8
1 pt
Which tree carries a greater load of moss and other plants than any other tree species in our region?

Douglas Fir
Western Red Cedar
Western Hemlock
Big Leaf Maple
Red Alder
9
1 pt
What do we call plants that are still alive after major ecological disturbances (such as the Mount Saint Helens eruption)?
Survivors
Re-growers
Outlasters
Hearty
10
1 pt
What are some of these plants that were able to survive (select all that apply)?
willow
english ivy
black cottonwood
vine maple
sitka spruce
11
1 pt
What factor best allowed seeds and insects to be reintroduced on Mount Saint Helens after the eruption?
Rain
Birds
Elk droppings
Wind
12
1 pt
How long do scientists expect it to take for Mount Saint Helents to look the way it did before the eruption?
30 years
50 years
100 years
Several hundred years
13
1 pt
Which of the following is NOT a cavity nesting bird in our area?
Red-breasted Nuthatch
Northern Flicker
American Robin
American Kestrel
Barn Owl
14
1 pt
Which of the following forest practices would best benefit cavity nesting birds?
Selective cutting
Clear-cutting
15
1 pt
How are juniper trees damaging the environment in eastern Oregon?
The shade they provide prevents sun from reaching native desert plants
They absorb too much water out of the soil
They provide habitats for invasive birds
Their roots prevent other plants from growing by taking up too much space
16
1 pt
How much water an an average juniper tree extract from the ground per day?
5 gallons
15 gallons
25 gallons
over 40 gallons
17
1 pt
Which of the following land management practices has led to an increase in juniper trees in the last 100 years?
fire suppression
climate change
drough
wilderness protection
18
1 pt
What sparked the 2002 Biscuit Fire?
lightning
an out of control camp fire
arson
an abandoned camp fire
19
1 pt
Which of the following are benefits to leaving dead trees where they are after a fire? (select all that apply)
they enrich the soil by providing nutrients
they anchor the soil to prevent erosion
they prevent future fires from getting out of control
they provide shade for young seedlings
20
1 pt
Which of the following have contributed the most to larger and more catastrophic wildifres?
drought
increasing rates of arson
more frequent lightning strikes due to climate change
a history of fire supression
21
1 pt
Which of the following is a measurement of forest diversity?
number of different tree species
abundance of trees
lichen abundance
soil pH
22
1 pt
What type of forest is most common along the coast of Oregon?
Hemlock Spruce Forests
Douglas Fir Forests
Mixed - Conifer Forests
Subalpine Forests
Ponderosa Pine FOrests
23
1 pt
Which forest type grows very slowly?
Hemlock Spruce Forests
Douglas Fir Forests
Mixed-Conifer Forests
Subalpine Forests
Ponderosa Pine Forests
24
1 pt
Which forest prefers dry conditions?
Hemlock Spruce Forests
Douglas Fir Forests
Mixed-Conifer Forests
Subalpine Forests
Ponderosa Pine Forests
25
1 pt
Which forests need lots of sun and a little moisture?
Hemlock Spruce Forests
Douglas Fir Forests
Mixed-Conifer Forests
Subalpine Forests
Ponderosa Pine Forests
26
1 pt
Which forest makes up most of Oregon's "working" forest?
Hemlock Spruce Forests
Douglas Fir Forests
Mixed-Conifer Forests
Subalpine Forests
Ponderosa Pine Forests
27
1 pt
How many forest types are there in Oregon?
5
7
12
23
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