Pca Weeds Frequently Tested Actual Exam Questions And Answers

PCA WEEDS FREQUENTLY TESTED ACTUAL EXAM QUESTIONS AND
ANSWERS

Question 1.
Cotyledons

Correct Answer: first leaf or first pair of leaves produced by the embryo of a
seed plant


Question 2.
First true leaf

Correct Answer: first leaves to emerge after cotyledons


Question 3.
Collar

Correct Answer: Region in grasses at the junction of the sheath and blade, often
lighter colored than surrounding tissue


Question 4.
Leaf blade

Correct Answer: flattened part of leaf


Question 5.
Node

Correct Answer: Meristematic point on a stem where one or more leaves arise


Question 6.
Internode

Correct Answer: Segment of plant between nodes


Question 7.
Leaf sheath

Correct Answer: Basal portion of a leaf, wrapped around the stem above a node.
Almost exclusively monocots


Question 8.
Petiole

,Correct Answer: The stalk of a leaf, which joins the leaf to a node of the stem.


Question 9.
Auricle

Correct Answer: Small lobe or ear-shaped appendage found at the base of the
leaf blade of grasses. Aids in seedling identification


Question 10.
Ligule

Correct Answer: A membranous or hairy structure on the inside of a leaf at the
junction of the leaf blade and sheath


Question 11.
Awn

Correct Answer: A bristlelike appendage in grasses, usually a continuation of the
mid-vein of the bracts surrounding the flower


Question 12.
Hypocotyl

Correct Answer: The stem derived from the portion of the embryo located
between the cotyledons and the radicle


Question 13.
Inflorescence

Correct Answer: cluster of flowers


Question 14.
Coleoptile

Correct Answer: The covering of the young shoot of the embryo of a grass seed.


Question 15.
Tuber

Correct Answer: a swollen underground stem


Question 16.
Rhizome

,Correct Answer: a horizontal, underground stem that produces new leaves,
shoots, and roots


Question 17.
Stolon

Correct Answer: a horizontal branch from the base of plant that produces new
plants from buds at its tips


Question 18.
Bulbs

Correct Answer: the round parts of some plants that are underground


Question 19.
Recognize the key fy grass seedlings

Correct Answer: features used to identi- Leaf blade, collar, ligule, sheath


Question 20.
Recognize the key fy broadleaf seedlings

Correct Answer: features used to identi- Roots, leaf arrangement, leaf blade,
leaf veins, cotyledons, true leaves


Question 21.
What weeds are poisonous to animals?

Correct Answer: Jimsonweed, Nightshades, Common groundsel, coast
fiddleneck, yellow starthistle


Question 22.
Identify types of vegetative propagules.

Correct Answer: Runners, suckers, stolons, buds, rhizomes, bulbs


Question 23.
List of unique seed or vegetative growth structures that plants have which aid in dispersal

Correct Answer: Plants with burs or spiked seeds that catch in animal fur, plants
that disperse their seed with tumbling plant parts, plants with seed that are
pappus-bearing for dispersal by wind, plants which spread with vegetative
propagules plants that produce prolific small seed

, Question 24.
Examples of plants with burs or spiked seeds that catch in animal fur

Correct Answer: Filaree, puncturevine, wild oat, foxtail barley, hare barley


Question 25.
Examples of plants that disperse their seed with tumbling plant parts

Correct Answer: Russian thistle


Question 26.
Examples of plants pus-bearing for dispersal

Correct Answer: with seed that are pap- Hairy fleabane, common groundsel,
cattails by wind


Question 27.
Examples of plants etative propagules

Correct Answer: which spread with veg- Johnsongrass, yellow nutsedge, field
bindweed


Question 28.
Examples of plants that produce prolific small seed

Correct Answer: Purslane, pigweed, smallflower umbrella sedge


Question 29.
List information that should be recorded when monitoring for weeds.

Correct Answer: What weeds are present, where weeds are present, weather
conditions, stage of weed growth


Question 30.
List resources to assist tion

Correct Answer: in weed identifica- UC IPM, Weed Pest Identification Monitor-ing
Cards, CAC


Question 31.
Function of the xylem (apoplast)

Correct Answer: Nonliving tissue in plants that functions primarily to conducct
water and mineral nutrients from roots to the shoot