3 - Identifying water potential of plant tissue

Question 1

Describe the limitations of this procedure

Answer 1

• not all potato chips are the same size, instead of using scalpel and ruler use a borer tool
• only carried out practical once- should repeat and calculate a mean

Question 2

Give 2 control variables

Answer 2

1. Leaving potatoes in test tube for same amount of time
2. Surface area of potatoes

Question 3

Why is it important to dry the potato chips before and after soaking in bathing solution?

Answer 3

To remove excess water that may be in the potato that could interfere with the weight

Question 4

Why is it important to remove the potato chips from the sulking in the same order they were put in?

Answer 4

To make sure that the time they were left in for is as similar as possible

Question 5

How can u use the graph to find the concentration of sucrose which was isotonic to the potato

Answer 5

Read off where the line meets the x axis