Explain why most living organisms depend on photosynthesis.

Mark scheme

Marking points from the official mark scheme (Oct/Nov 2017). The mark or mark type is shown in brackets.

1. [6] 1 plants / leaves / producers / autotrophs;
2. [6] 2 trap/absorb / need / use / convert AW + light ;
3. [6] 3 into chemical energy OR make carbohydrate / glucose / sugar / starch;
4. [6] 4 (plants / animals) eaten / food OR reference to
5. [6] herbivores / carnivores / consumer;
6. [6] 5 (plants / photosynthesis) uses + carbon dioxide;
7. [6] 6 (plants / photosynthesis) produces + oxygen ;
8. [6] 7 respiration + uses glucose / uses oxygen / produces carbon dioxide ;
9. [6] 8 provide a habitat for other living organisms / use of plants by humans;
10. [4] 1 limiting (factor);
11. [4] 2 water + insufficient AW ;
12. [4] 3 temperature + too low / high ;
13. [4] 4 carbon dioxide + insufficient AW ;
14. [4] 5 reference to enzymes ;
15. [4] 6 plant cannot store / translocate + sucrose / sugar + more quickly;