CO2 can be used (by in photosynthesis do not accept CO2 taken in by roots 3 (b) any two from: warmth / suitable temperature • do not accept heat / hot weather damp / / rain / humid / moisture • oxygen • suitable pH • 2 [6] M8. ideas that trees hang over the sea / grow close to the sea / on the shore coconuts drop into • – the sea. or similar (not just simply ‘spread) wax / fibres (trapped air) stop the fruit sinking / provide water resistance • – water store supply water until root reaches a supply • – nutrient supply nutrients/salts until root reaches supply • – hard to protect from breakage on landing / to protect the embryo from • – feeding animals. [Award maximum of 1 mark for 2 survival / spread features or 1 survival + 1 spread feature] for stop the fruit sinking’ ‘Fibres provides water resistance’ ‘Wax Award 2 marks any three for 1 mark each [3] M9. (a) (i) (cell) membrane 1 (ii) vacuole 1 (b) any two from: (cell) wall • chloroplast(s) • ignore chlorophyll
CO2 can be used (by in photosynthesis do not accept CO2 taken in by roots 3 (b) any two from: • warmth / suitable temperature do not accept heat / hot weather • damp / / rain / humid / moisture • oxygen • suitable pH 2 [6] M8. ideas that • trees hang over the sea / grow close to the sea / on the shore – coconuts drop into the sea. or similar (not just simply ‘spread) • wax / fibres (trapped air) – stop the fruit sinking / provide water resistance • water store – supply water until root reaches a supply • nutrient – supply nutrients/salts until root reaches supply • hard – to protect from breakage on landing / to protect the embryo from feeding animals. [Award maximum of 1 mark for 2 survival / spread features or 1 survival + 1 spread feature] for ‘Fibres stop the fruit sinking’ ‘Wax provides water resistance’ Award 2 marks any three for 1 mark each [3] M9. (a) (i) (cell) membrane 1 (ii) vacuole 1 (b) any two from: • (cell) wall • chloroplast(s) ignore chlorophyll
year-9-revision-pack.docx