ET 21: core practical schlerenchyma, tensile strength and mineral deficiencies Flashcards
(6 cards)
1
Q
How to calculate tensile strength?
A
dividing the force applied by cross sectional area
2
Q
how to measure for growth of a plant in a mineral experiment?
A
measure growth of leaves
3
Q
what to calculate for a mineral deficiency experiment?
A
Mean growth of leaves
4
Q
Describe how the tensile strength of the aorta wall can be determined? (3 marks)
A
- remove an extract of an aorta fibre
- record thickness of aorta
- add a weight each time in 5 minute intervals until the string snaps
5
Q
What to always include at the end of a tensile strength question?
A
calculate change in tensile strength
6
Q
state what is meant by the term tensile strength?
A
the amount of weight a fibre can endure before snapping
