plant systems Flashcards
1
Q
what does the xylem do?
A
transport water from roots to leaves
2
Q
what does the phloem do?
A
transport sugars from the leaves around the plant
3
Q
what structure does a xylem have?
A
dead cells producing a hollow, lignified tube
4
Q
what is the structure of the phloem?
A
sieve tube cells with companion cell that conducts cellular functions
5
Q
what is transpiration?
A
the upward movement of water from evaporation out of the stomata
6
Q
what is adhesion-cohesion?
A
the sticking of water molecules to the plant wall (ad) and to each other (co)
7
Q
what do guard cells do?
A
swell and close stomata when full and shrink and open stomata when empty
8
Q
what is translocation?
A
the active movement of glucose from source (leaves) to sinks (fruit) as starch
