The diagram shows a seed (Fig. 1) and a plant developing from this seed (Fig. 2). [Figure 2.1 - Fig. 1 and Fig. 2]
- (a)(i)Name two structures visible in Fig. 2 that are not visible in Fig. 1. 1 2[2]
- (a)(ii)Name the process represented by the arrow drawn between Fig. 1 and Fig. 2. Describe the use of enzymes in this process. name of process use of enzymes[4]
- (b)In an experiment, the growth of a plant from a seed is found to be faster as temperatures increase up to 35 °C. Explain how the development of a plant from a seed would be affected by a temperature much higher than 35°C.[2]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2018). The mark or mark type is shown in brackets.
- [2] radicle /root; root hairs; plumule / shoot / stem ; leaves ; hypocotyl;
- [4] (name of process) germination / growth ; (use of enzymes) maximum 3 marks from digest/breakdown / hydrolysis ; amylase ; starch + to maltose / glucose ; protease ; protein + to amino acids ; lipase ; fats + to fatty acids and glycerol ;
- [2] development AW slower / would not germinate / would not grow ; denature; reactions / digestion / hydrolysis / breakdown + slow / don't occur ;
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →