Exam 1 Flashcards
4 Growth forms of vascular plants
- grasses
- grass-like
- forbs
- shrubs/trees
Grasses
- jointed stems
- hollow between the joints
- leaves are in two rows along the stem
- no showy flowers
Grass-like
looks like grass but has solid stems without joints
- stems are often triangular
- veins are parallel
- sedges and rushes
Sedges have ________, rushes are __________, both of them have _______ that come out of the ground
edges
round
leaves
Forbs
- herbaceous
- stems and leaves dies back each year
- veins are in a net pattern
- range wildflowers and weeds
- most poisonous plants are
Shrubs + trees
- woody plants
- shrubs have several main stems
- trees usually have a single/dominant plant
- usually have broad leaves, needles or scales
- defenses against grazing
Annuals
live for one growing season (winter or summer)
Perennials
constant recycle until it dies, extensive root systems
Cool-season
-flower in the early summer, forage during spring/fall, summer forage at high elevation, adapted to cold and wet seasons
Warm-season
- most growth in warm summer, flower from mid-summer to early fall, summer forage
2 groups of flowering plants
monocot and dicot
Monocot
usually grasses. Parallel venation
Dicot
usually, forbs and shrubs netted venation
root systems (2)
- fibrous
- taproot
fibrous root system
hair-like, monocots, evolved first
Taproot system
primary central roots, often dicots
