Quick

Question 1

Describe and explaom precautions needed so no air enters the apparatus and the xylem

Answer 1

1) cut stem underwater at an angle
2) set uo apparetud underwater do no air bubble can enter the xylem
3) insert the stem underwatwe so no air bubble
4) twke out and ensure airtight ysing vaseline and bung

These all ensure jo air enters

Introduce an air bubble by a syreinge, close the open end with water so no new air bubble goes in,
DONT LET AIR BUBBLE GO TOO FAR IT GOES INTO XYLEM
- finally keep coloumn still to ensure validity and no break

Question 2

Why would there be anomlay with air”

Answer 2

Sudden movement of air in

Question 3

Why better to use cappliary tube

Answer 3

Thid because smaller units and better resoltuin = lower uncertainty

Smaller volumes has smaller diamger sp distance greater / easier ti measure

Question 4

How to standardise valid compairson betwen two leafs

Answer 4

Same surface area or calculate tranpiratioj rate oer unit area

Question 5

Transpiration vs transpieation stream

Answer 5

Transpiration is loss of water through aerial parts of plant stream is moevemnt kf water through soil to root sup vessels and oht if plant in leaf