13.2 Preliminary Tests (Iodine test for starch)

Question 1

What Is LIX?

Answer 1

LIX - Left, Independent, X axis (For an independent variable of an experiment, we put it on the left side of the table and on the x axis of a graph)

Question 2

What is RDY?

Answer 2

RDY - Right, Dependent, Y axis (For an dependent variable of an experiment, we put it on the right side of the table and on the y axis of a graph)

Question 3

What is an Independent variable?

Answer 3

The thing we change in an experiment

Question 4

What is a dependant variable?

Answer 4

The thing we measure or observe in an experiment

Question 5

What is/are a control variable/s?

Answer 5

The thing/s we keep the same in an experiment

Question 6

How do you test if chlorophyll is needed for photosynthesis?

Answer 6

1. Boil leaf for 1 minute
2. Turn off Bunsen burner
3. Place leaf in test tube of ethanol in the
   warm water until it turns white
4. Rinse leaf in cold water
5. Place leaf on a white tile and add 1-2 drops of iodine solution and observe color change

Question 7

What is a leaf with green and non-green parts called?

Answer 7

Variegated leaf