Title Feb-March_2025_9700_52_QP - Crack A Level.pdf ✅

This document has 16 pages. Any blank pages are indicated. [Turn over Cambridge International AS & A Level BIOLOGY 9700/52 Paper 5 Planning, Analysis and Evaluation February/March 2025 1 hour 15 minutes You must answer on the question paper. No additional materials are needed. INSTRUCTIONS ● Answer all questions. ● Use a black or dark blue pen. You may use an HB pencil for any diagrams or graphs. ● Write your name, centre number and candidate number in the boxes at the top of the page. ● Write your answer to each question in the space provided. ● Do not use an erasable pen or correction fluid. ● Do not write on any bar codes. ● You may use a calculator. ● You should show all your working and use appropriate units. INFORMATION ● The total mark for this paper is 30. ● The number of marks for each question or part question is shown in brackets [ ]. *6409638083* DC (CJ/CT) 345321/2 © UCLES 2025 , , * 0000800000001 * ¬O. 4mHuOaE_{6W ¬a{Q©v©d{¦|K[¦ ¥ueuEu55EE U 5U
2 © UCLES 2025 9700/52/F/M/25 1 Sand dunes are important ecosystems that are found in many regions of the world. Sand dune ecosystems can be damaged by natural events, such as extreme weather conditions, and by human activities including farming and tourism. Fig. 1.1 is a map of part of a national park in a coastal area of northern Europe. The map shows the range of ecosystems present, including two types of sand dune ecosystem: yellow dune and grey dune. key yellow dune grey dune salt marsh rocky shore farmland sand road sea 0 1 km Fig. 1.1 A biologist decided to study the grey dune ecosystem. The biologist visited the ecosystem in the summer, in the month of June. (a) The grey dune ecosystem is a habitat for the grey bush cricket, Platycleis albopunctata. Fig. 1.2 shows a grey bush cricket. Fig. 1.2 * 0000800000002 * , , ĬÍĊ®Ġ ́íÈõÏĪÅĊÞù ̧þ× ĬáčüÔĝòÿÛĆõĉıêģĞĂ ĥåμĕμõąĕąõĕąąĕĥõμÕ DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN

4 © UCLES 2025 9700/52/F/M/25 (b) The biologist also estimated the species diversity of the plants in the grey dune ecosystem. The biologist counted the number of individual plants of each species in a small area and calculated Simpson’s index of diversity (D). The formula for Simpson’s index of diversity (D) is: D = 1 – (R( n N ) 2 ) key to symbols: n = number of individuals of each species present in the sample N = the total number of all individuals of all species present in the sample Table 1.1 shows the results. Complete Table 1.1 to calculate Simpson’s index of diversity (D) to three significant figures. Table 1.1 species number of individuals (n) n N ( n N ) 2 marram grass 8 red fescue 38 creeping buttercup 3 red clover 2 heath dog violet 3 lady’s bedstraw 9 restharrow 20 ribwort plantain 1 salad burnet 12 spiked speedwell 4 N = 100 R( n N ) 2 = .................. Simpson’s index of diversity (D) = ................................. [3] * 0000800000004 * , , ĬÍĊ®Ġ ́íÈõÏĪÅĊàù ̧Ā× ĬáĎúÜġĀúÙîăǶĥÐóĦĂ ĥĕĕÕμĕĥÕõåμąÅõåμμÕ DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN DO NOT WRITE IN THIS MARGIN