Biology HIGHER TIER Paper 2 AQA unofficial mark scheme

bri bri 21

3

unofficial markscheme here!!!!!!

Reply 1

bri bri 21

OP

3

1.1) many species can live together... which word best describes lots of species living together in a habitat. answer- community ( 1 mark)
1.2) I think the question was about the 4 birds- which two are the most closely related? i think it was the first box correct me if I'm wrong. ( 1 mark)
1.3) it was like how do scientists know these birds are part of the same species? or something like that. answer- because they can reproduce and produce fertile offspring ( 1 mark)
1.4) describe the migration pattern for bird a, there was a graph. answer- from January to the middle of may the the number of birds remained the same/constant. then from then onwards the number rose rapidly until the middle of September( i think it was correct me if I'm wrong) then the the number slowly declined till the end off the year. ( 3 marks)
1.5) some birds only migrate to the uk in certain times... which bird only migrates to the uk in certain times or something like that. answer D because from a certain month there was no birds in the uk then at like the middle of June the number rose until like august (i think it was ) then declined again to zero. (1/2 marks)
1.6) which bird species had the lowest disease resistance? answer- i think it was B but I'm not sure (1 mark)
[2.0]
2.1)

(edited 10 months ago)

Reply 2

charlie23432

5

Not sure which question number/order but
- Why does genetic variation benefit tomato plant (1)
- Definition of tissue culture (1)
- Why would farmers want to produce genetically identical tomato plants (1)
- How can scientists tell if two organisms are of different species (1)
- Reaction time practial (4)
- Label eye multiple choice (2)
- How eye adapts to bright light (2)
- Punnet square XX/XY (3)
- CO2 6-8 8-12 hours or something like that (4)
- CO2 conc to do with replacing rainforest with maize plants (2)
- Why do scientists use percentages (2)
- Give one other conclusion from a graph about tree diversity (1)
- Why does diversity in trees mean more diversity in animal species (2)
- Draw a punnet square (3)
- How is probability of child being able to produce FSH 0.5 (4)
- How can you tell ovaries are producing oestrogen (1)
- How does lack of FSH mean underdeveloped breasts (2)
- Follicle 5 mark with Pi r^3 (answer is 7)
- Rate with tangent question (4) (answer is 1.5-2)
- What are the things labeled A,C,T and G called? (1)
- How many nucleotides (1)
- Order or meiosis (1)
- Chromosomes at start and end of meiosis (2)
- Importance of number of chromosomes (3)
- How meiosis creates genetic variation (2)
- 6 mark fossil record question/genome (6)
quite alot ive forgotten but theres the best i can do atm

Reply 3

bri bri 21

OP

3

Original post by charlie23432

Not sure which question number/order but
- Why does genetic variation benefit tomato plant (1)
- Definition of tissue culture (1)
- Why would farmers want to produce genetically identical tomato plants (1)
- How can scientists tell if two organisms are of different species (1)
- Reaction time practial (4)
- Label eye multiple choice (2)
- How eye adapts to bright light (2)
- Punnet square XX/XY (3)
- CO2 6-8 8-12 hours or something like that (4)
- CO2 conc to do with replacing rainforest with maize plants (2)
- Why do scientists use percentages (2)
- Give one other conclusion from a graph about tree diversity (1)
- Why does diversity in trees mean more diversity in animal species (2)
- Draw a punnet square (3)
- How is probability of child being able to produce FSH 0.5 (4)
- How can you tell ovaries are producing oestrogen (1)
- How does lack of FSH mean underdeveloped breasts (2)
- Follicle 5 mark with Pi r^3 (answer is 7)
- Rate with tangent question (4) (answer is 1.5-2)
- What are the things labeled A,C,T and G called? (1)
- How many nucleotides (1)
- Order or meiosis (1)
- Chromosomes at start and end of meiosis (2)
- Importance of number of chromosomes (3)
- How meiosis creates genetic variation (2)
- 6 mark fossil record question/genome (6)
quite alot ive forgotten but theres the best i can do atm

thank you thats soooooooo helpful if you remember any question numbers or more questtions then that would be great

Reply 4

RAVENX123

6

It asked about how eyes react from dim light to bright light and also the next eye question was on what happens to the lens when the ciliary muscles contract

1. Community and genus birds
2. Farmer
3. The FSH and underdeveloped breasts question
4. Meiosis
5. Coffee
6. Deforestation/Trees/Maize
7. Tangent
8. Milk
9. 6 mark question about evolution and fossilsI cant remember the exact order and some of these may be the same question
the order of meiosis. What is the importance of chromsomes changing? Why does a cell need to have 23 chromosomes,

Community question(The first one) - 1 Mark
The next one where it asks you to say which bird species are different - 1 mark
another multiple choice which says something about why scientists think they are similar - 1 mark
3 marker about migration patterns of bird species
A1 marker about which one has lowest disease resistance
another one marker about which one migrated.

Biology HIGHER TIER Paper 2 AQA unofficial mark scheme

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