AQA-BL2HP-QP-JUN13 - Centre Number For Examiners Use Candidate Number Surname Other Names Examiners Initials Candidate Signature Question General

AQA-BL2HP-QP-JUN13 - Centre Number For Examiners Use...

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General Certificate of Secondary Education Higher Tier June 2013 Additional Science BL2HP Unit Biology B2 Biology Unit Biology B2 Tuesday 14 May 2013 9.00 am to 10.00 am For this paper you must have: a ruler. You may use a calculator. Time allowed 1 hour Instructions Use black ink or black ball-point pen. Fill in the boxes at the top of this page. Answer all questions. You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. Do all rough work in this book. Cross through any work you do not want to be marked. Information The marks for questions are shown in brackets. The maximum mark for this paper is 60. You are expected to use a calculator where appropriate. You are reminded of the need for good English and clear presentation in your answers. Question 3(b) should be answered in continuous prose. In this question you will be marked on your ability to: – use good English – organise information clearly – use specialist vocabulary where appropriate. Advice In all calculations, show clearly how you work out your answer. BL2HP H (JUn13BL2HP01) G/K95175 6/6/6/6 Centre Number Candidate Number Surname Other Names Candidate Signature For Examiner’s Use Examiner’s Initials Question Mark 1 2 3 4 5 6 7 8 TOTAL
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2 (02) G/K95175/Jun13/BL2HP Do not write outside the box There are no questions printed on this page DO NOT WRITE ON THIS PAGE ANSWER IN THE SPACES PROVIDED
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3 Do not write outside the box (03) G/K95175/Jun13/BL2HP Turn over Answer all questions in the spaces provided. 1 The diagram shows a section through a plant leaf. A B 1 (a) Use words from the box to name two tissues in the leaf that transport substances around the plant. epidermis mesophyll phloem xylem .................................................................. and .................................................................. (1 mark) 1 (b) Gases diffuse between the leaf and the surrounding air. 1 (b) (i)What is diffusion?
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(04) G/K95175/Jun13/BL2HP 2 Some students were asked to investigate the distribution of clover in a field of grass. They noticed that the clover grew in patches amongst the grass. 2 (a) The students decided to use quadrats. Describe how the students should decide where to place the quadrats to investigate the distribution of the clover. ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ ............................................................................................................................................ (2 marks) 2 (b) The diagram shows one of the quadrats the students used. 50 cm Key Area covered with clover 2 (b) (i) Estimate the number of squares of the quadrat covered with clover. ............................................................................................................................................ ............................................................................................................................................ Number of squares = .............................. (1 mark)
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5 Do not write outside the box (05) G/K95175/Jun13/BL2HP Turn over 2 (b) (ii) Describe how you worked out your answer to part (b)(i) .
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