Weeds study guide for PCA exam
Summer Annual Weeds
Emerge in the spring or early summer time, develop throughout the summer, produce seed in
mid to past due summer, and are killed by way of frost in fall/early iciness.
Winter Annual Weeds
Typically emerge late summer season or fall, continue to exist through the iciness with the aid of
growing into small rosettes, then resume their increase and produce seeds in past due spring or
early summer season the subsequent 12 months.
Perennials
Plants that live 3 or greater years, repeating the vegetative boom and reproductive cycles each
yr.
Biennials
Angiosperms that whole their lifestyles cycle in years, commonly do not flower or reproduce till
the second season.
Dicot
angiosperm with two cotyledons internal its seed, flower elements in multiples of four or five,
and vascular bundles in jewelry
Monocot
angiosperm with one seed leaf in its ovary
cotyledon
first leaf or first pair of leaves produced by means of the embryo of a seed plant
Image: cotyledon
first proper leaves
primary leaves
Image: first real leaves
,collar location
Region consisting, leaf blade, leaf sheath, auricles (if gift), a ligule, and connective collar
Image: collar vicinity
Leaf blade
flattened a part of leaf
Image: Leaf blade
Node
factor in which one or greater leaves are attached
Image: Node
Internode
A section of a plant stem among the factors where leaves are attached.
Image: Internode
leaf sheath
the base of a leaf that wraps around the stem; typical in grasses and a few different monocots.
Image: leaf sheath
Petiole
The stalk of a leaf, which joins the leaf to a node of the stem.
Image: Petiole
Auricle
Claw like appendages on collar
Image: Auricle
Ligule
A membranous or furry structure on the inside of a leaf on the junction of the leaf blade and
sheath
Image: Ligule
Awn
bristlelike appendage of sure grasses
, Image: Awn
Hypocotyl
The a part of a plant embryo directly beneath the cotyledons, forming a reference to the radicle.
Image: Hypocotyl
inflorescence
flowering a part of a plant
Image: inflorescence
coleoptile
The protecting of the young shoot of the embryo of a grass seed.
Image: coleoptile
Tuber
specialized food-garage stem that grows underground
Image: Tuber
rhizome
a horizontal, underground stem that produces new leaves, shoots, and roots (rootstock)
Image: rhizome
stolons/runners
horizontal, above the floor stems; asexual reproduction, new flora get up from stolons
Image: stolons/runners
Bulbs
the spherical elements of a few plant life that are underground
Image: Bulbs
Weeds which are poisonous to animals
Jimsonweed, nightshades, common groundsel, coast fiddleneck, yellow starthistle
Vegetative propagule
Summer Annual Weeds
Emerge in the spring or early summer time, develop throughout the summer, produce seed in
mid to past due summer, and are killed by way of frost in fall/early iciness.
Winter Annual Weeds
Typically emerge late summer season or fall, continue to exist through the iciness with the aid of
growing into small rosettes, then resume their increase and produce seeds in past due spring or
early summer season the subsequent 12 months.
Perennials
Plants that live 3 or greater years, repeating the vegetative boom and reproductive cycles each
yr.
Biennials
Angiosperms that whole their lifestyles cycle in years, commonly do not flower or reproduce till
the second season.
Dicot
angiosperm with two cotyledons internal its seed, flower elements in multiples of four or five,
and vascular bundles in jewelry
Monocot
angiosperm with one seed leaf in its ovary
cotyledon
first leaf or first pair of leaves produced by means of the embryo of a seed plant
Image: cotyledon
first proper leaves
primary leaves
Image: first real leaves
,collar location
Region consisting, leaf blade, leaf sheath, auricles (if gift), a ligule, and connective collar
Image: collar vicinity
Leaf blade
flattened a part of leaf
Image: Leaf blade
Node
factor in which one or greater leaves are attached
Image: Node
Internode
A section of a plant stem among the factors where leaves are attached.
Image: Internode
leaf sheath
the base of a leaf that wraps around the stem; typical in grasses and a few different monocots.
Image: leaf sheath
Petiole
The stalk of a leaf, which joins the leaf to a node of the stem.
Image: Petiole
Auricle
Claw like appendages on collar
Image: Auricle
Ligule
A membranous or furry structure on the inside of a leaf on the junction of the leaf blade and
sheath
Image: Ligule
Awn
bristlelike appendage of sure grasses
, Image: Awn
Hypocotyl
The a part of a plant embryo directly beneath the cotyledons, forming a reference to the radicle.
Image: Hypocotyl
inflorescence
flowering a part of a plant
Image: inflorescence
coleoptile
The protecting of the young shoot of the embryo of a grass seed.
Image: coleoptile
Tuber
specialized food-garage stem that grows underground
Image: Tuber
rhizome
a horizontal, underground stem that produces new leaves, shoots, and roots (rootstock)
Image: rhizome
stolons/runners
horizontal, above the floor stems; asexual reproduction, new flora get up from stolons
Image: stolons/runners
Bulbs
the spherical elements of a few plant life that are underground
Image: Bulbs
Weeds which are poisonous to animals
Jimsonweed, nightshades, common groundsel, coast fiddleneck, yellow starthistle
Vegetative propagule
