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Plant mineral deficiencies CPAC 7
- Institution
- PEARSON (PEARSON)
Full CPAC 7 write up which achieved passing grade and fulfilled all necessary criteria for Biology Edexcel
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Name: Hiba Majid (P:\Science\Mr Alim\Year 12\AS Biology)(Core Practical 7)
Title: Investigating plant mineral deficiencies
METHOD:
1. Carry out instructions given to complete the practical (CPAC1)
2. List apparatus below and describe techniques used when measuring quantities with a particular piece
of apparatus:
Piece of apparatus Purpose of piece of apparatus Comment on how piece of equipment was used Appendix
accurately/appropriately/safely 5c tech
Cress plant Used to observe changes in The cress, since it was quite fragile, had to be
plants while different dealt with gently. This included when the cress
deficiencies are being roots were being separated from each other
investigated. and when the root was being placed inside the
hole of the parafilm. We used tweezers to
carefully take each strand out without snapping
the plant.
5 test tubes They were used to put the The test tubes were kept away from the edge
solutions in with the plants
10ml nutrient These acted as the Volume of solutions were controlled and kept
solutions independent variable, used to at 10ml each
see how deficiencies of each
nutrient affects a plant
Pipette This was used to measure and It was squeezed lightly to avoid spillages
transfer the nutrient solutions
into the test tube
Parafilm This was used to cover the top We used 2 pieces as we saw one piece was not
of the test tube sufficient to cover the top completely-hole in
parafilm made using pencil gently as to ensure
no spillages
Black paper This was to limit the amount of The tubes were measured against the balck
light coming in to ensure that paper at the beginning to ensure all of it would
any plant growth was due to be covered and was then secured with tape
the nutrients of the plant and
to prevent growth of algae
Measuring This was used to measure out each measurement was taken at eye level to
cylinder volume of solutions ensure the measurement taken was accurate
Test tube rack This held the test tubes kept away from edge of the table to ensure it
and the test tubes it was carrying did not fall
(CPAC a2a, 2b, 2d, 3a, 3b)
Mr Alim
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