Required practical 3 -water potential of plant tissue Flashcards
1
Q
Why is percentage change in mass calculated?
A
To compare results, they vary in starting mass
2
Q
Why are repeats important?
A
More reliable mean, to help identify anomalies
3
Q
Why are the same species of plant tissue used?
A
will have similar alleles so genetic similarities
4
Q
Why are skins of potato removed?
A
different water potential
5
Q
Why are cylinders cut to same length?
A
same surface area = same rate of osmosis
6
Q
Why did the potato gain mass in the weak solution?
A
Higher water potential in the surrounding solution, so water enters by osmosis
