CALIFORNIA RPF LATEST 2026 STUDY GUIDE QUESTIONS
AND SOLUTIONS RATED A+
✔✔Cambium - ✔✔Growing tissue, produces xylem and phloem, that is part of the inner
bark.
✔✔Chain - ✔✔66 ft. measurement unit, or four (4) rods long.
✔✔Chaparral - ✔✔A thicket of low, evergreen oaks or dense tangled brushwood.
✔✔Season Check - ✔✔Lengthwise separation of wood which goes or extends across
the rings of annual growth and is caused by stress during seasoning.
✔✔Clearcutting - ✔✔Area in which the entire timber stand has been cut.
✔✔Codominant - ✔✔Trees which are the average level of the canopy and receive light
on the top but not necessarily on all sides of the crown.
✔✔Conifer - ✔✔Cone bearing trees, usually evergreen.
✔✔Cord - ✔✔Unit of measurement for stocked wood, four ft. by four ft. by 8 ft. (4' x 4' x
8') or 128 cubic feet.
✔✔Crown - ✔✔The part of a tree or woody plant bearing live branches and foliage.
✔✔Crown Fire - ✔✔Fire which has moved into the tops of the trees.
✔✔Cruise - ✔✔Survey of forest lands to locate and estimate volume and grades of
standing timber.
✔✔Cubic Foot - ✔✔A unit of true volume that measures 1 x 1 x 1 ft or the equivalent of
12 board feet.
✔✔Cunit - ✔✔A unit of volume, usually pulpwood, that measures 100 ft3.
✔✔Cull - ✔✔Any item of production, e.g., trees, logs, lumber, or seedlings, rejected
because it does not meet certain specifications of usability or grade.
✔✔Deciduous - ✔✔Trees which usually drop all of their leaves more or less at one time,
usually in the fall.
✔✔Log Deck - ✔✔Platform where logs are held in the sawmill prior to sawing. Also
called the Mill Deck.
, ✔✔Log Defect - ✔✔Any irregularity or imperfection in a log or lumber product which
reduces the volume of sound wood or lowers the durability, strength or utility value.
✔✔Dendrology - ✔✔Identification or systematic classification of trees.
✔✔Crown Density - ✔✔The compactness of foliage of the crowns of trees and shrubs.
✔✔Dioeciuos - ✔✔Male and female flowers produced on separate plants.
✔✔Dominant - ✔✔Trees whose crowns extend above the average level of the forest
canopy. They receive direct sunlight from above and some from the sides.
✔✔Duff - ✔✔Organic debris in various stages of decomposition on top of the mineral
soil.
✔✔Ecology - ✔✔The study of the interrelationships between living organisms and the
environment.
✔✔Even-Aged Management - ✔✔Applied to a stand where relatively small age
differences exist between individual trees. The maximum age difference is usually 10 to
20 years.
✔✔Tree Farm - ✔✔Area usually privately owned which is dedicated to the production of
trees.
✔✔Surface Fire - ✔✔A fire which burns over the forest floor and burns only the surface
litter, loose debris and small vegetation.
✔✔Exploitation - ✔✔Use of natural resources with economic greed as the primary
motivation and the manipulation of the environment with no consideration for sustained
yield.
✔✔Firebreak - ✔✔A barrier existing or constructed before a fire to serve as a line from
which work can be facilitated. Inflammable materials have been removed from the area
and it is designed to stop creeping or running fires.
✔✔Multiple Use of the Forest - ✔✔Management of the forest with concern for all natural
resources including timber, wildlife, recreation, mining, watershed, and range. All of the
uses are used without the harming or detrimental affects on the other uses.
✔✔Gall - ✔✔A pronounced localized swelling of modified structure which occurs on
plants usually as the result of the irritation or stimulus by another organism.
AND SOLUTIONS RATED A+
✔✔Cambium - ✔✔Growing tissue, produces xylem and phloem, that is part of the inner
bark.
✔✔Chain - ✔✔66 ft. measurement unit, or four (4) rods long.
✔✔Chaparral - ✔✔A thicket of low, evergreen oaks or dense tangled brushwood.
✔✔Season Check - ✔✔Lengthwise separation of wood which goes or extends across
the rings of annual growth and is caused by stress during seasoning.
✔✔Clearcutting - ✔✔Area in which the entire timber stand has been cut.
✔✔Codominant - ✔✔Trees which are the average level of the canopy and receive light
on the top but not necessarily on all sides of the crown.
✔✔Conifer - ✔✔Cone bearing trees, usually evergreen.
✔✔Cord - ✔✔Unit of measurement for stocked wood, four ft. by four ft. by 8 ft. (4' x 4' x
8') or 128 cubic feet.
✔✔Crown - ✔✔The part of a tree or woody plant bearing live branches and foliage.
✔✔Crown Fire - ✔✔Fire which has moved into the tops of the trees.
✔✔Cruise - ✔✔Survey of forest lands to locate and estimate volume and grades of
standing timber.
✔✔Cubic Foot - ✔✔A unit of true volume that measures 1 x 1 x 1 ft or the equivalent of
12 board feet.
✔✔Cunit - ✔✔A unit of volume, usually pulpwood, that measures 100 ft3.
✔✔Cull - ✔✔Any item of production, e.g., trees, logs, lumber, or seedlings, rejected
because it does not meet certain specifications of usability or grade.
✔✔Deciduous - ✔✔Trees which usually drop all of their leaves more or less at one time,
usually in the fall.
✔✔Log Deck - ✔✔Platform where logs are held in the sawmill prior to sawing. Also
called the Mill Deck.
, ✔✔Log Defect - ✔✔Any irregularity or imperfection in a log or lumber product which
reduces the volume of sound wood or lowers the durability, strength or utility value.
✔✔Dendrology - ✔✔Identification or systematic classification of trees.
✔✔Crown Density - ✔✔The compactness of foliage of the crowns of trees and shrubs.
✔✔Dioeciuos - ✔✔Male and female flowers produced on separate plants.
✔✔Dominant - ✔✔Trees whose crowns extend above the average level of the forest
canopy. They receive direct sunlight from above and some from the sides.
✔✔Duff - ✔✔Organic debris in various stages of decomposition on top of the mineral
soil.
✔✔Ecology - ✔✔The study of the interrelationships between living organisms and the
environment.
✔✔Even-Aged Management - ✔✔Applied to a stand where relatively small age
differences exist between individual trees. The maximum age difference is usually 10 to
20 years.
✔✔Tree Farm - ✔✔Area usually privately owned which is dedicated to the production of
trees.
✔✔Surface Fire - ✔✔A fire which burns over the forest floor and burns only the surface
litter, loose debris and small vegetation.
✔✔Exploitation - ✔✔Use of natural resources with economic greed as the primary
motivation and the manipulation of the environment with no consideration for sustained
yield.
✔✔Firebreak - ✔✔A barrier existing or constructed before a fire to serve as a line from
which work can be facilitated. Inflammable materials have been removed from the area
and it is designed to stop creeping or running fires.
✔✔Multiple Use of the Forest - ✔✔Management of the forest with concern for all natural
resources including timber, wildlife, recreation, mining, watershed, and range. All of the
uses are used without the harming or detrimental affects on the other uses.
✔✔Gall - ✔✔A pronounced localized swelling of modified structure which occurs on
plants usually as the result of the irritation or stimulus by another organism.
