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Provisional Mark Scheme For Edexcel IGCSE Biology Paper One 17th may 2016

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Reply 100

daisie

For the micropropagation question is it not glucose instead of starch?

Reply 101

samiyah jameel

I put glucose as well, I think you will get the mark for both

Reply 102

TheBasement

I did a bar graph that's right... right?

Reply 103

dRaGoN2509

Original post by TheBasement

I did a bar graph that's right... right?

No you'd obviously do line graphs because the question asks you specifically to 'join up the points' so it's not a bar graph. You also needed a key to separate the still wind and the moving wind.

Reply 104

Oliver000123

Pretty sure its a bar graph it didn't say anywhere to join up the points and you can can't of done a key for a line graph as you could only use one colour

Reply 105

Knockingpoint

Guys did anyone do 1BR , the regional paper?

Reply 106

samiyah jameel

Original post by Oliver000123

Pretty sure its a bar graph it didn't say anywhere to join up the points and you can can't of done a key for a line graph as you could only use one colour

It said join the points up with straight lines, and you don't have to do a key you can just label the lines, but i forgot to do that because i was just so stressed it slipped my mind.
Also it isn't discrete data that you are plotting it's continuous so it has to be a line graph.

Reply 107

JackCollard

Original post by conradliebers

Yeah thats what I wrote, but the original guy who made the mark scheme wrote that so I just left it in, but yeah I agree.

'The guy' is me, you should've said so at the start! I would've happily changed it as i wasn't very sure on my answer haha :smile:

Reply 108

JackCollard

Original post by Oliver000123

Pretty sure its a bar graph it didn't say anywhere to join up the points and you can can't of done a key for a line graph as you could only use one colour

It was a line graph, and you labelled the lines by just writing which data they represent next to them.

Samiyah is correct about the data being 'continuous' as there is a range of values for the same thing. A bar graph would be correctly used when dealing with non numerical independent variables ie. catagories of things with names.

This explains the difference:

http://www.bbc.co.uk/schools/gcsebitesize/maths/statistics/representingdata3hirev1.shtml

Reply 109

Amar Joshi

Anyone know when the papers go online?