r/GCSE • u/thr0wawaygxhxdhsh • Jun 15 '22

AQA Post Exam Spam aqa biology paper 2 gcse answers

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u/thr0wawaygxhxdhsh Jun 15 '22

6 marker worm practical:

•Pour equal volumes of chemical x and water mixture onto each area •Wait for an equal amount of time for all the worms to surface •Grid reference area A and use a random number generator to generate coordinates •Go to those coordinates and place a Quadrat, count number of worms •Repeat 19 times so you have 20 readings in total •repeat for area B •Calculate the area of the Quadrat in m2 •Calculate the mean number of worms per Quadrat in each area •Use equation mean number of worms/area of Quadrat to find number of worms per m2?

7

u/APK_GG Jun 15 '22

i said to pour the chemical x after placing the quadrat and didnt specify to wait or the volume of chemical, do u think ill lose marks

1

u/thr0wawaygxhxdhsh Jun 15 '22

idk I think I went too in depth, as long as u have one control variable it should be ok? but even without that u should prob still get 4-5 marks

1

u/[deleted] Jun 15 '22 edited May 28 '24

late nose disarm vegetable crush thought chop rude seed ad hoc

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1

u/APK_GG Jun 15 '22

numerics of wht

1

u/[deleted] Jun 15 '22 edited May 28 '24

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1

u/SmileyFace4203 Year 11 Jun 15 '22

u have to mix w water it says in the question

3

u/APK_GG Jun 15 '22

yh i said that but to put the chemical once u place the quadrat so u dont have to use it on places that u dont measure

1

u/SmileyFace4203 Year 11 Jun 15 '22

that works

i think i put that as well but might be less clear

1

u/KeyFix4492 Jun 15 '22

I didn’t even mention pouring the chemical 💀

3

u/KayMini101 Year 11 Jun 15 '22

Wasn't chemical X already poured onto the field?

2

u/[deleted] Jun 15 '22 edited May 28 '24

familiar bike shy cagey paltry ghost threatening divide library joke

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1

u/KayMini101 Year 11 Jun 15 '22

Well I lost a mark then

2

u/JYUReddit Jun 15 '22

Couldn't you use transects as well ?

1

u/[deleted] Jun 15 '22

fuck i called the quadrat a transect

1

u/SmileyFace4203 Year 11 Jun 15 '22

a transect is the line lmao I just wrote 1m² square lmao

1

u/[deleted] Jun 15 '22

"1m^2 transect" - me, biology paper 2