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AQA Certificate in Biology (IGCSE) Paper 1 - Answers

Marvin16

So just did Paper 1 AQA IGCSE biology today and wanted to get the majority of the answers :biggrin:

Reply 1

YungChicken

Original post by Marvin16

So just did Paper 1 AQA IGCSE biology today and wanted to get the majority of the answers :biggrin:

Same I just did paper 1, for the question on the experiment in the middle after the water level in the tube with the plant in it, what did you get?

Reply 2

Marvin16

Original post by YungChicken

Same I just did paper 1, for the question on the experiment in the middle after the water level in the tube with the plant in it, what did you get?

If you mean the one about water consumption by the plant i got 5,4,0.4 but i dont think its right.

Reply 3

FusionNetworks

Original post by Marvin16

If you mean the one about water consumption by the plant i got 5,4,0.4 but i dont think its right.

Same here <3
What did you get for the question about what would happen to the plant LEAVES if the temperature of the potometer increased?

Reply 4

somerandomer654

Original post by Marvin16

If you mean the one about water consumption by the plant i got 5,4,0.4 but i dont think its right.

Yes it is right

Reply 5

studentgenius1

I said that the leaves would wilt as too much water would be absorbed in the cells. Therefore the stomata would close up as the guard cells become turgid and CO2 can't get in the plant so photosynthesis can't occur.
Don't know if that's right though.

Reply 6

YungChicken

Original post by studentgenius1

Did you find that question confusing as the water level in the tube increased? Shouldn't it decrease if it's using up water? I really feel like I messed up on that question

Reply 7

YungChicken

Original post by Marvin16

If you mean the one about water consumption by the plant i got 5,4,0.4 but i dont think its right.

which part of the paper was the water consumption on?

Reply 8

Marvin16

Original post by YungChicken

Did you find that question confusing as the water level in the tube increased? Shouldn't it decrease if it's using up water? I really feel like I messed up on that question

I thought the exact same thing! Must have been an inverted scale or something odd

Reply 9

YungChicken

Original post by Marvin16

I thought the exact same thing! Must have been an inverted scale or something odd

How did you answer the question when it said they added a fan to the leaves what happened to the water?

Reply 10

FusionNetworks

I said how the increase in wind acting on the leaves caused evaporation to occur faster. So more water is lost from the plant due to evaporation, the volume of water taken in will increase as the plant draws up more water.

Reply 11

studentgenius1

Original post by YungChicken

Did you find that question confusing as the water level in the tube increased? Shouldn't it decrease if it's using up water? I really feel like I messed up on that question

Yeah I did in the exam but I think I managed to do it correctly, afterwards I realised that the numbers on the scale must start at 0 at the top then go down