SCGS 2017 Bio Prelim P1 QP

1 CANDIDATE NAME CLASS 4 INDEX NUMBER BIOLOGY Paper 1 Multiple Choice 5158/01 Additional Materials: Optical Answer Sheet READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, class and index number on the Question Paper and Answer Sheet in the spaces provided. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. This question paper consists of 25 printed pages. SINGAPORE CHINESE GIRLS’ SCHOOL Preliminary Examination Secondary Four Monday 7 August 2017 1 Hour

2 1 The diagram shows a student’s drawing of guard cells. Which label is not correct? 2 The diagram shows the female reproductive system. Which level of organization are the structures W, X, Y and Z at? Cell Tissue Organ Organ system A X Y W Z B X Z Y W C Y X Z W D Y W Z X W Z Y X

3 3 The graph shows the changes in the mass of a piece of plant tissue in distilled water at 30oC. The following conclusions are made. 1 The plant cells are plasmolysed between 1.5 hrs to 2.5 hrs. 2 The plant cells are fully turgid between 1.5 hrs to 2.5 hrs. 3 The rate of osmosis is highest from 1.5 hrs to 2.5 hrs. 4 There was no movement of water molecules from 1.5 hrs to 2.5 hrs. Which conclusion/s is/are correct? A 1 only B 2 only C 2 and 3 only D 2, 3 and 4 only Time (hrs) Mass of plant tissue (g)

4 4 Figure (1) represents the appearance of a freshly split petiole of a Coleus. The appearances of the petioles in solutions of different water potentials after 30 minutes are shown below. Arrange the petioles in the order of how they appear in solutions of increasing water potential. A (3), (4), (2) and (5) B (3), (5), (2) and (4) C (5), (2), (4) and (3) D (5), (3), (4) and (2) (1) (2) (3) (4) (5)

5 5 Which food would be best for a person suffering from anaemia? food iron/mg per 100g of food calcium/mg per 100g of food vitamin C/mg per 100g of food vitamin D/mg per 100g of food A bananas 0.4 7 10 0 B fish 0.4 28 0 6.38 C lentils 7.6 39 0 0 D milk 0.1 120 0.5 0.002 6 A student carried out an experiment to identify the two food substances present in each of three test tubes. The table shows the result of the student’s tests. test tube