transpiration

Question 1

1.

Answer 1

starts with evaporation of water of cells still inside leaf

Question 2

what is transpiration

Answer 2

evaporation of water from a plant

Question 3

2.

Answer 3

water diffuses in through air spaces in spongy mesophyll and out of the leaf through stomata

Question 4

3.

Answer 4

now water passes through from the xylem to the leaf to replace water that has been lost

Question 5

4.

Answer 5

finally water drawn into root hair cells and up the xylem vessels into the leaf

Question 6

what is the whole process called

Answer 6

transpiration stream

Question 7

why is transpiration important
2 reasons

Answer 7

brings water which is required for photosynthesis
transports dissolved mineral ions like magnesium too

Question 8

how does evaporation of water help a leaf

Answer 8

helps leaf cool down especially in hot weather

Question 9

rate: temp

Answer 9

higher at higher temp as evaporation is higher at higher temp

Question 10

rate: humidity

Answer 10

higher in dry conditions when air is not humid since evap is higher in dry conditions

Question 11

rate: wind

Answer 11

higher in windy conditions because wind removes water vapour

Question 12

rate: light intensity

Answer 12

higher at increased light intensity - higher rate of photosynthesis