Theme 3 - Plants Flashcards
(13 cards)
1
Q
450 mya
A
Nonvascular bryophytes began to colonize water bank
2
Q
425 mya
A
1st plants arrived on land
Developed vasculature
3
Q
300 mya
A
Seed plants evolved
4
Q
Prevent desiccation
A
Cuticle
5
Q
Respiration
A
Stomata
6
Q
Reproduction
A
Alternation of Generations
7
Q
Locomotion
A
Roots
8
Q
Cuticle
A
1
Prevents desiccation
Hydrophobic
Secreted by epidermal cells
9
Q
Stomata
A
2 Controls respiration and transpiration Controlled by guard cells (epidermal) More on leaf underside Found in non-vascular plants Turgid GC=open Flaccid GC=closed
10
Q
Vasculature
A
3 Transports nutrients Gives ability to grow tall Angiosperms evolved vessels (have tracheids) Gymnosperms and ferns have tracheids
11
Q
Tracheids
A
5
Dead at maturity (associated withy xylem)
Lignin deposits in cell walls (secondary cell wall)
No perforations
Closely packed, elongated cells
12
Q
Vessel elements
A
6
Associated with xylem
Shorter and wider
Walls have gaps in them
13
Q
Root System
A
4
Lignified vascular tissue underground
Nonvascular plants have rhizoids
Anchoring and water collection
