d) all of the above- Describe how light intensity is responsible for an increase or decrease in the transpira-
tion rate. - Study the two graphs below which show water loss from a plant over a period of time,
and answer the following question:
Which graph could show water loss under increasing external humidity? Give reasons
for your answer.- Describe how each of the following adaptations results in a decrease in the transpira-
tion rate:
a) Spiny leaves
b) Rolled leaves
c) Waxy cuticle - Complete the following sentences:
a) Translocation refers to the ...
b) Xylem tissue in plants is responsible for the transport of ...
c) The roots absorb water through the ... - Draw a table showing how the structure of root hairs is adapted for their function.
188 6.5. Summary