transport in plants Flashcards
1
Q
give 4 structural features of companion cells
A
- lots of mitochondria
- large nucleus
- dense cytoplasm
- plasmodesmata
2
Q
what key word should you always use when describing translocation?
A
MASS FLOW
3
Q
other than allowing solutes to filter through, give other role of seive plates
A
limit size of solutes passing through
4
Q
other than evaporation of water from leaves, what else causes transpiration?
A
water potential gradient bewteen leaf and atmosphere
5
Q
does light intesity affect rate of transpiration?
A
yes
