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0610 s13 qp_62
1.
UNIVERSITY OF CAMBRIDGE
INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *2408000291* BIOLOGY 0610/62 Paper 6 Alternative to Practical May/June 2013 1 hour Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. Electronic calculators may be used. You may lose marks if you do not show your working or if you do not use appropriate units. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question. This document consists of 15 printed pages and 1 blank page. IB13 06_0610_62/6RP © UCLES 2013 [Turn over
2.
2 1 Fig. 1.1 shows
two similar cut shoots in test-tubes that contained 20 cm3 of water at the start. One shoot has its leaves attached and the other shoot has had its leaves removed. The shoots were placed in the water immediately after being cut. A small quantity of oil was added to cover the water in these test-tubes. The two test-tubes with the shoots were left in the light for two days. shoot with leaves shoot without leaves height of water after 2 days oil height of water after 2 days water Fig. 1.1 (a) (i) Identify the variable that was changed (independent variable) in this investigation. [1] © UCLES 2013 0610/62/M/J/13 For Examiner's Use
3.
3 (ii) Suggest why
oil was placed on top of the water in both test-tubes. For Examiner's Use [1] (iii) Use a ruler to measure the height of the water in the two test-tubes, shown in Fig. 1.1. test-tube containing shoot without leaves mm test-tube containing shoot with leaves mm [1] (iv) Describe and explain your observations. [2] © UCLES 2013 0610/62/M/J/13 [Turn over
4.
4 (b) The two
shoots were removed from the test-tubes. Both shoots were immediately placed in a beaker of coloured water and left for 10 minutes. After 10 minutes the shoots were removed from the coloured water. The shoots were cut in half, as shown in Fig. 1.2, to see how far up the stem the coloured water had moved. coloured water each shoot cut in half from the cut end to the tip one half of each shoot showing the movement of the coloured water up the stem Fig. 1.2 © UCLES 2013 0610/62/M/J/13 For Examiner's Use
5.
5 For Examiner's Use shoot without leaves shoot with leaves Fig.
1.3 (i) Use a ruler to measure the distance moved by the coloured water, shown in Fig. 1.3. shoot without leaves mm shoot with leaves mm [1] (ii) Do the measurements in (b)(i) support the measurements in (a)(iii)? Explain your answer. [2] © UCLES 2013 0610/62/M/J/13 [Turn over
6.
6 (iii) Describe how
you could carry out a similar investigation to determine whether temperature affects the rate of water uptake of shoots with leaves. [3] © UCLES 2013 0610/62/M/J/13 For Examiner's Use
7.
7 Question 1 continues
on page 8. © UCLES 2013 0610/62/M/J/13 [Turn over
8.
8 (c) A group
of students measured the mass lost from a flask containing a shoot with leaves. The shoot was placed in water, on a balance as shown in Fig. 1.4. An automatic data logger recorded the mass every six hours for two days. shoot with leaves flask oil water balance data logger Fig. 1.4 Only natural light from the sun was allowed to fall on the shoot. The students calculated the mass lost every six hours. The data is shown in Table 1.1. Table 1.1 time of day 10:00 0.0 16:00 3.0 22:00 5.0 04:00 5.0 10:00 7.0 16:00 10.0 22.00 11.5 04.00 11.5 10.00 © UCLES 2013 mass lost / g 13.5 0610/62/M/J/13 For Examiner's Use
9.
9 (c) (i) Plot
the data from Table 1.1 on Fig. 1.5. For Examiner's Use Fig. 1.5 [4] (ii) Describe and explain the results. description explanation [3] © UCLES 2013 0610/62/M/J/13 [Turn over
10.
10 Fig. 1.6 shows
part of the lower surface of a leaf as viewed under a microscope. For Examiner's Use H stomata G × 300 120 mm Fig. 1.6 (d) Name the structures labelled G and H. G H [2] (e) The number of stomata on the lower surface of the leaf can be calculated by using Fig. 1.6. (i) Count the number of stomata visible in Fig. 1.6. number of stomata © UCLES 2013 0610/62/M/J/13 [1]
11.
11 (ii) The magnification
of the image in Fig. 1.6 is × 300. For Examiner's Use The length of one side of the image is 120 mm. The image is a square. You can calculate the actual length of one side of the square of leaf surface shown in Fig. 1.6 by dividing the length of one side of the image by the magnification. Calculate the actual length of one side of the square of leaf surface shown in Fig. 1.6. Show your working. actual length of one side of the square of leaf surface mm [1] (iii) Calculate the actual total area of the square of leaf surface shown in Fig. 1.6. Show your working. actual total area of the square of leaf surface mm2 [2] (iv) The number of stomata per mm2 can be calculated from the number of stomata and the actual total area of the square of leaf surface shown in Fig. 1.6. Calculate the number of stomata per mm2 of this leaf. Show your working. number of stomata per mm2 [2] (v) The total area of the lower surface of this leaf was measured and found to be 9000 mm2. Calculate the total number of stomata on the lower surface of this leaf. Show your working. total number of stomata [1] [Total: 27] © UCLES 2013 0610/62/M/J/13 [Turn over
12.
12 2 You are going
to observe and draw one of your fingers. For Examiner's Use (a) Place the palm of your hand on the paper. Examine one finger. Make a large, labelled drawing of this finger. [4] © UCLES 2013 0610/62/M/J/13
13.
13 (b) Fig. 2.1
shows the European mole, Talpa europa. For Examiner's Use × 0.8 hand Fig. 2.1 (i) State one similarity, visible in Fig. 2.1, between the structure of the mole’s hand and your hand. [1] (ii) Complete Table 2.1 to state two differences, visible in Fig. 2.1 between the shape and size of the mole’s hand and your hand. feature mole’s hand your hand shape size [2] (c) (i) Name the group of vertebrates to which the mole belongs. [1] (ii) State one feature, visible in Fig. 2.1, that supports your answer to (c)(i). [1] [Total: 9] © UCLES 2013 0610/62/M/J/13 [Turn over
14.
14 3 Arum lilies, such
as Arum maculatum, are plants that have a smell like rotting meat. The smell attracts flies so that the flowers can be pollinated. Some arum lilies have a purple coloured sheath and some have a light green coloured sheath. Fig. 3.1 shows an arum lily with part of the sheath cut away to show the inside. sheath flies Fig. 3.1 A group of students collected arum lilies from the same habitat, two with purple coloured sheaths and three with light green coloured sheaths. They opened the sheaths of each lily and counted the number of flies inside. The results are shown in Table 3.1. Table 3.1 colour of sheath number of flies purple 5 light green 5 light green 6 light green mean number of flies 3 purple total number of flies 4 (a) Calculate the total and mean number of flies found in each colour of sheath. Write your answers in Table 3.1. © UCLES 2013 [2] 0610/62/M/J/13 For Examiner's Use
15.
15 (b) Suggest two
ways in which this investigation could be improved. For Examiner's Use 1 2 [2] [Total: 4] © UCLES 2013 0610/62/M/J/13
16.
16 BLANK PAGE Permission to
reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the publisher will be pleased to make amends at the earliest possible opportunity. University of Cambridge International Examinations is part of the Cambridge Assessment Group. Cambridge Assessment is the brand name of University of Cambridge Local Examinations Syndicate (UCLES), which is itself a department of the University of Cambridge. © UCLES 2013 0610/62/M/J/13
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