- Messages
- 340
- Reaction score
- 339
- Points
- 73
R, in markschemes, means Reject and you answered perfectly well...They mean that if candidate mentioned only 'cytoplasmic' and did not include vacuoles then reject, but since you mentioned vacuoles as well, so you get the creditcan somebody help me with this confusing markscheme doubt?
The question says: Outline the differences between the apoplast and symplast pathways after the water has left the xylem?( 4 points)
My answer is: Apoplast:water moves through cell walls only and passes from one cell to another through adjacent cell walls or through airspaces between cells.
Symplast:water moves through cytoplasm and vacuole and passes from one cell to another via plasmodesta.
View attachment 59954
i think i should earn 2 marks for mentioning about plasmodesta and cell walls for apoplast somehow, the 2nd point of the markscheme says 'ref to only cytoplasmic/not including vacuoles' then at the 6th point it says '(includes) vacuolar pathway /(through) vacuoles' and according to my coursebook symplast pathway passes through both cytoplasm and vacuoles.i am confused.how many marks should i earn for mentioning both cytoplasm and vacuole in symplast?