I'm not sure how many marks this GCSE AQA Biology question would get out of 6

Hi everybody,
I'm doing past paper questions for biology and I'm not sure how many marks my answer would pick up. I'm thinking around 4 or 5 but I'm not really too sure. Any help would be much appreciated.
Thank you!

Im struggling to post an imagine so i will just copy and paste my answer and the mark scheme here lol

question:
Red blood cells are specialised animal cells.
Compare the structure of a red blood cell with the structure of a plant cell. (6 marks)

my answer:
Red blood cells do not have a nucleus to have more room for heomoglobin. Plant cells do have a nucleus. Plant cells have chloroplasts and a cell wall where as red blood cells do not. Plant cells and red blood cells both have cytoplasm. Plant cells have a permenant vacuole whereas red blood cells do not.