TRAQ - Part I: Wood Structure question s with
verified answers
Angiosperm Ans✓✓✓ plant with seeds borne in an ovary. Consists of
two large groups: monocotyledons (grasses, palms, and related plants)
and dicotyledons (most woody trees, shrubs, herbaceous plants, and
related plants) (Contrast with gymnosperms)
Annual rings Ans✓✓✓ Rings of Xylem that are visible in a cross section
of the stem, branches, and roots of some trees, In temperate zones, the
rings typically represent one year of growth.
Buttress root Ans✓✓✓ Roots at the trunk base that help support the
tree and equalize mechanical stress.
callus Ans✓✓✓ undifferentiated tissue formed by the cambium,
usually as the result of wounding (contrast with woundwood)
cambium Ans✓✓✓ thin layer of meristematic cells that give rise
(outward) to the phloem and (inward) to the xylem, increasing stem
and root diameter.
cellulose Ans✓✓✓ complex carbohydrate found in the cellular walls of
the majority of plants, algae, and certain fungi.
, compression wood Ans✓✓✓ reaction wood in gymnosperms, and
some angiosperms, that develops on the underside of branches or
leaning trunks and is important in load bearing (contrast with tension
wood).
earlywood Ans✓✓✓ portion of the annual ring (growth ring) that
forms during spring, characterized by large-diameter cells and thin
walls. Also called springwood (contrast with latewood).
fiber Ans✓✓✓ elongated, tapering, thick-walled cell that provides
strength to wood
flexure wood Ans✓✓✓ response growth triggered by the continued
flexing of a tree stem or branch
gymnosperm Ans✓✓✓ plants with exposed seeds, usually within cones
(contrast with angiosperm).
latewood Ans✓✓✓ portion of an annual ring (growth ring) that forms
during summer, characterized by small-diameter cells with thick walls.
Summer wood (contrast with early wood)
lignin Ans✓✓✓ organic substance that impregnates certain cell walls
to thicken and strengthen the cell to reduce susceptibly to decay and
pest image.
verified answers
Angiosperm Ans✓✓✓ plant with seeds borne in an ovary. Consists of
two large groups: monocotyledons (grasses, palms, and related plants)
and dicotyledons (most woody trees, shrubs, herbaceous plants, and
related plants) (Contrast with gymnosperms)
Annual rings Ans✓✓✓ Rings of Xylem that are visible in a cross section
of the stem, branches, and roots of some trees, In temperate zones, the
rings typically represent one year of growth.
Buttress root Ans✓✓✓ Roots at the trunk base that help support the
tree and equalize mechanical stress.
callus Ans✓✓✓ undifferentiated tissue formed by the cambium,
usually as the result of wounding (contrast with woundwood)
cambium Ans✓✓✓ thin layer of meristematic cells that give rise
(outward) to the phloem and (inward) to the xylem, increasing stem
and root diameter.
cellulose Ans✓✓✓ complex carbohydrate found in the cellular walls of
the majority of plants, algae, and certain fungi.
, compression wood Ans✓✓✓ reaction wood in gymnosperms, and
some angiosperms, that develops on the underside of branches or
leaning trunks and is important in load bearing (contrast with tension
wood).
earlywood Ans✓✓✓ portion of the annual ring (growth ring) that
forms during spring, characterized by large-diameter cells and thin
walls. Also called springwood (contrast with latewood).
fiber Ans✓✓✓ elongated, tapering, thick-walled cell that provides
strength to wood
flexure wood Ans✓✓✓ response growth triggered by the continued
flexing of a tree stem or branch
gymnosperm Ans✓✓✓ plants with exposed seeds, usually within cones
(contrast with angiosperm).
latewood Ans✓✓✓ portion of an annual ring (growth ring) that forms
during summer, characterized by small-diameter cells with thick walls.
Summer wood (contrast with early wood)
lignin Ans✓✓✓ organic substance that impregnates certain cell walls
to thicken and strengthen the cell to reduce susceptibly to decay and
pest image.
