Complex Permanent Tissue Flashcards
1
Q
Xylem elements
A
Tracheids dead
xylem vessels dead
xylem fibres dead
xylem parenchyma living
2
Q
Xylem
A
Unidirectional flow from roots to stem and leaves
3
Q
Phloem
A
Bidirectional or multidirectional flow
4
Q
Tracheids
pores or perforations absent
A
Vessels
vessel members are connected through perforations in their common wall
5
Q
Protoxylem or protophloem
A
X Early formed
Y Narrow lumen
L more lignin deposition
E
M
PHLOEM
sieve tube elements: narrow
6
Q
Metaxylem or Metaphloem
A
XYLEM
Late formed
Wider lumen
less lignin deposition
PHLOEM
wider sieve tube elements
