AQA BIOL4 - 13th June 2014 - Unofficial Markscheme

Yes it is... without water photosynthesis cannot occur at all (looking at the equation)

Look at my comment. That's about an A I'd say just in

Calculation for population wrong as higher death rate so must have decreased. Also fish question wrong


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Shaded plants is more adapted to low light intensity than shaded plant. Use the graph to explain why
Isn't that because shaded plants have low compensation points, so high growth rate, and they carry out photosynthesis thats why they grow faster in the shade?

Very nice, I agree with the grade boundaries, the paper wasnt harder than Jun 2013 maybe slightly easier. I reckon for the last question you could also talk about transects and percentage cover... just my opinion. AQA have to take into considerartion its the first year without jan exams which I think could have an effect on peoples grade so yeah 53/54 i think an A will be

I can't remember this exact question but it's interesting because I thought the question said estimate the population size, so you would measure frequency rather than % cover?

Surely percentage cover is an esitmate of the frequency of induviduals in a quadrat

Having gone through the 'rough' mark scheme I think I should have 65 marks! It's impossible to tell, but I do hope so! How did everyone else find that paper?

I thought that paper was okay, their was a few dodgy suggest questions but on the whole probably one of the easier BIOL4 papers that there has been.

No way it was the easiest, wasn't the hardest. If it was the easiest then the grade boundaries would be more like 57 for an A

Does everyone still think CO2 was a limiting factor?

Females have two...