plant mineral deficiencies

Question 1

independent

Answer 1

Minerals present

Question 2

dependent

Answer 2

Physical characteristics of the plant

Question 3

control

Answer 3

Volume of mineral solution used – half a test tube will be filled with each
Same species of the plant
Size of plantlets used – same length plantlet cuttings should be used for each solution
Amount of light received – all test tubes placed in test tube rack which is positioned on a sunny window sill
Same amount of time growing – all test tubes should be left for one week before examining plantlets

Question 4

control experiment

Answer 4

Solution containing all minerals acts as positive control and solution containing no minerals (just distilled water) acts as negative control.

Question 5

method

Answer 5

1] Half fill a test tube with the solution containing all nutrients.
2]Cover the top of the tube with aluminium foil and push down on covering so that there is a well in the centre.
3]Gently push the roots of plantlet through the hole so it is in the solution below.
4]Repeat steps 1 to 3 with the other 4 solutions.
5]Wrap all tubes in aluminium foil and place them in the test tube rack on a sunny window sill.
6]Leave plantlets for approximately one week.
7]Observe characteristics and growth of the plantlets, comparing each solutions’ effects.