True/False
Indicate whether the sentence or statement is true or
false.
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1.
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The tree in a forest is a good example of the interaction between its inherited
growth characteristics and its environment.
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2.
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The art of growing and reproducing a forest is called silviculture
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3.
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The biological factors of an environment include the interaction between plants,
small animal life, and microorganisms
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4.
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An environmental change can rarely be related to just one single fact
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5.
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Temperature affects the daily growth processes of plants of plants and their
seasonal development.
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6.
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The range which is optimum temperature is the same for all tree species.
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7.
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In a dormant condition, trees are more susceptible to temperature
extremes.
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8.
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Some trees grow best with daily or even a seasonal temperature change
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9.
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Radiant energy from the sun triggers a photochemical reaction that is used to
produce carbohydrates and carbon dioxide
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10.
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The quality of light affects the growth of trees.
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11.
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The duration of light has a little effect on tree growth.
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12.
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Light intensity is important for tree growth
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13.
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The length of daylight can affect tree growth of certain trees.
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14.
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A shortening of the photoperiod produces large-diametered, thin-walled
springwood cells.
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15.
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Carbon dioxide is taken from the air for respiration.
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16.
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Carbon dioxide from air is required for photosynthesis.
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17.
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Air movements can result in greater evaporation and transpiration.
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18.
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A large tree may transpire as much as 1000 gallons of water a day.
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19.
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Soil affects the tree by anchoring it and by serving as growth medium.
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20.
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The reproductive habits of trees are all the same.
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21.
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Softwood trees reproduce either by seed or by stump and root sprouts
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22.
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Timber trees normally develop one main stem or bole.
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23.
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Root development increases as soil moisture increases.
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24.
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Most tree species require well-drained, well-aerated soils for good root
development
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25.
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Mycorrhizal roots enable trees to more fully utilize water and plant nutrients
in the soil.
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26.
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Uneven stands have a variation of age of 1-100 years.
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27.
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The mature timber stage is from a decline of height growth to the attainment of
full height.
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28.
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An isolated tree is one growing in the open with little or no competition from
adjoining trees.
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29.
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A stand of trees consisting of a single species is a “complete”
stand
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30.
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Good stocking means the forest area is producing all of the timber it is capable
of growing
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31.
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A closed crown density is when three-fourths or more of the ground is shaded by
the tree crowns
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32.
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A thin crown density is when less than half of the ground is shaded.
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33.
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Site quality indicates the productive capacity of a specific area of forest land
for single species or group of species.
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Multiple Choice
Identify the letter of the choice that best
completes the statement or answers the question.
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34.
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_____ is the most limiting element of all the environmental factors on the
growth of trees .
a. | air | c. | moisture | b. | light | d. | temperature |
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35.
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When soil moisture is low, the tree automatically closes the _____ to reduce
transpiration.
a. | leaf | c. | stomata | b. | bud | d. | lenticles |
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36.
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The _____ of a tree is that point of which a tree is no longer able to obtain
water fast enough.
a. | water level | c. | stress radio | b. | wilting point | d. | drought
potential |
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37.
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_____ is the vital process of every self-perpetuating tree species.
a. | water | c. | respiration | b. | photosynthesis | d. | reproduction |
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38.
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_____ is the trees ability to withstand competition.
a. | tolerance | c. | completion | b. | competition | d. | dominance |
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39.
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______ is the ability of a tree to resist heat, cold, droughts, insect
infestations, disease attacks, and other elements limiting survival and growth.
a. | staging | c. | conditioning | b. | mycorrhizal | d. | hardiness |
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40.
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A stage of trees that vary little in the age of the trees is called
a. | adult | c. | like aged | b. | even-aged | d. | true-type |
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41.
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An even-aged tree stand has an age difference of ____ yeas
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42.
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The _____ stage is the time from seed to 5 to 15 years
a. | young | c. | sapling | b. | pole | d. | seedling |
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43.
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The _____ stage of development is from the closing of the stand to the dropping
of the lower limbs
a. | mature | c. | overmature | b. | young | d. | sapling |
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44.
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The development stage from the start of deteriorating in the stand to a decline
in quality and volume is called_____.
a. | mature | c. | seedling | b. | young | d. | overmature |
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45.
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Which of the following is not a classification by position of the crown?
a. | dominant | d. | mature | b. | co-dominant | e. | overtopped | c. | intermediate |
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46.
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_____ are small trees with crowns below the general canopy level and receiving
no direct sunlight.
a. | dominant | c. | intermediate | b. | Co-dominant | d. | overtopping |
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47.
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_____ are trees with crowns forming the general canopy level and receiving full
sunlight from above, but little from the sides.
a. | dominant | c. | Intermediate | b. | Co-Dominant | d. | overtopping |
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48.
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_____ are shorter, smaller-crowned trees just extending into the general canopy
level and receiving little direct sunlight from above.
a. | dominant | c. | intermediate | b. | Co-Dominant | d. | overtopping |
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49.
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If two or more species of trees are present in a stand, it is called
_____
a. | pure | b. | complete | c. | open | d. | mixed |
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50.
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The _____ of a forest stand refers to the closeness of the trees in terms of
stocking
a. | complexity | c. | density | b. | openness | d. | thickness |
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51.
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The degree of timber stocking in a managed forest may be controlled by
_____.
a. | chemicals | c. | harvesting | b. | fire | d. | thinning |
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