Biology · Oct / Nov 2024 · Paper 62 · Question 2
0610
As printed in the paper
Show the answer and mark scheme
2(a)(i)[1]
any one from:
heat shield drawn and labelled between the lamp and the syringe ; syringe in a beaker (filled with water) drawn and labelled ;
2(a)(ii)[2]
any two from:
volume of sodium hydrogencarbonate (solution) ;
distance from the lamp / light intensity / wattage of light bulb ; type / species, of, plant / leaf ;
number / amount, of (leaf) discs (in the syringe) ;
size / surface area, of (leaf) discs ;
2(a)(iii)[1]
carbon dioxide concentration / sodium hydrogencarbonate concentration ;
2(b)(i)[4]
axes labelled with units ;
suitable linear scale and data that occupies at least half the grid in both directions ;
five points plotted accurately ± half a small square ;
suitable line drawn ;
2(b)(ii)[2]
correct estimate from the candidate’s graph at 12 minutes ;
any indication annotated on the candidate’s graph at 12 minutes or an indication that matches the candidate’s estimate ;
2(b)(iii)[2]
(-)15 (%) ;;
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.