AQA GCSE BIOLOGY Higher Tier Paper 2H Monday 1 June 2020.

Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. GCSE BIOLOGY Higher Tier Paper 2H H Monday 1 June 2020 Afternoon Time allowed: 1 hour 45 minutes Materials For this paper you must have: • a ruler • a scientific calculator. Instructions • Use black ink or black ball-point pen. • Pencil should only be used for drawing. • Fill in the boxes at the top of this page. • Answer all questions in the spaces provided. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. Cross through any work you do not want to be marked. • In all calculations, show clearly how you work out your answer. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 TOTAL Information • The maximum mark for this paper is 100. • The marks for questions are shown in brackets. • You are expected to use a calculator where appropriate. • You are reminded of the need for good English and clear presentation in your answers. *JUNH01* IB/M/Jun20/E20 8461/2H 12 0 3 This question is about plant hormones. 0 3 . 1 Farmers can spray seeds with gibberellins to start germination. What are two other uses of gibberellins? [2 marks] Tick () two boxes. To help in tissue culture To help roots form To increase fruit size To kill weeds To promote flower production Do not write outside the box *12* IB/M/Jun20/8461/2H 13 Students investigated the effect of light intensity on the height of seedlings. Figure 3 shows the equipment. Figure 3 0 3 . 2 Describe two improvements the students should make to their investigation. [2 marks] 1 2 Question 3 continues on the next page Turn over ► *13* IB/M/Jun20/8461/2H Do not write outside the box 14 Figure 4 shows a seedling growing towards a lamp. Figure 4 0 3 . 3 Suggest how the students measured the length of the curved seedling in Figure 4. [1 mark]