GRADE 10LIFE SCIENCESPRACTICAL 3MemorandumTOTAL:30A.COMPARISON OF PULSE RATE BEFORE AND AFTER EXERCISEInrestAfer 2minutessitngquietlyAfer 4 minutes sitng quietlyAfer 2minutesexerciseAfer 2 minutes restAfer 4minutesrestAfer 6 minutes rest*Afer 8minutesrest*Afer 10 minutesrest*5060708090100110TimePulse rate (beats/minute)The graph above is only an exampleCriteria:Correct type of graph – line graph √X-axis supplied with label √Y-axis supplied with label √Correct scale used at each axis √√Y-axis starts at 50 √Use a ruler to connect points on graph √Suitable heading for graph √Points marked correctly √√If not a line graph; do not give marks for ‘correct type of graph’ or ‘points marked correctly’(10)2.The pulse rate increases during exercise √Decreases gradually afer the exercise session √To a level just above the original pulse rate √(3)1