Quiz 1 Flashcards
What single family of plants are all grasses members of?
Poaceae
What is grass? Monocot or Dicot?
Monocot- single cotyledon (seed leaf)
What kind of roots does grass have?
Fibrous roots - spread out
Two major groups of grass? What does grass perform?
Cool Season - (C3) Warm Season - (C4) Photosynthesis
Examples of Cool Season?
Poa (Bluegrass), Festuca (Fescue) Lolium (Rye) Agrostis (Bent)
Examples of Warm Season?
Cynodon (Bermuda) Zoysia
What is special about the Transition Zone of Turfgrass?
Both Cool and Warm Season grasses compete.
Inflorescence - What is it?
The flowering portion of the shoot
Spikelet - What is it?
Basic unit of a grass inflorescence
What does a Spikelet consist of?
Two Glumes and 1 or more Florets
Floret - What is it?
A single flower enclosed by the lemma and palea (bracts)
Three types of Arrangements of Spikelets?
Raceme Spike Panicle
Spike - What kind of arrangement is it?
Attached directly to main supporting axis

Raceme - What kind of arrangement is it?
borne on pedicels (stalks) attached directly to the main axis

Panicle - What kind of arrangement is it?
Borne on branches arising from the main axis

Primary Root
Root that develops from the embryo (seed)
Adventenious Root
A root that arises from any organ other than the embryo
Node - What is it? Where is it? (Region of stem where the ________ is attached.
Joint of a stem, region of stem were the leaf is attached
Auxillary Bud
Vegative bud arising at the junction of the leaf and stem
Types of Leaf Blades
Pointed
Boat
Blunt
Leaf Sheath
Lower Tubular portion of the leaf that encircles the stem
Types of Leaf Sheaths
Closed
Open
Overlap
Vernation
Arrangement of new leaves within the older leaf sheath
Either Rolled or Folded
Examples of Folded Vernation
Poa and Rye