CHS_2016_Bio_Prelim_P2_QP.pdf

Name: Index Number: Class: CATHOLICHIGH SCHOOL Preliminary Examination 3 Secondary 4 A1 BIOLOGY 5158/02 Paper 2 Friday 16 September 2016 1 hour 45 minutes Additional Materials: - READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE ON THE MARGINS. Section A Answer all questions. Write your answers in the spaces provided on the Question Paper. Section B Answer all questions. Write your answers in the spaces provided on the Question Paper. Electronic calculators may be used. You are advised to spend no longer than one hour on Section A and no longer than 45 minutes on Section B. The number of marks is given in brackets [ ] at the end of each question or part question. For examiner’s use only: Section A / 50 Section B / 30 This paper consists of 20 printed pages. [Turn over 98 trendylineThis This paperapconsists of consists2020printed pages.rinted pagestrendyline

Section A Answer all questions. Write your answer in the spaces provided. 1 Figure 1.1 shows the alimentary canals of two mammals, an insect-eating bat, which is a carnivore, and a rabbit, which is a herbivore. Figure 1.1 (a)Name the organs labelled V and W. [2] V W (b)Explain the role of mechanical digestion. [3] 99 trendyline

Scientists investigated digestion in different species of mammal. The mammals that they studied ranged in size from an elephant shrew, Elephantulus edwardii, with a mass of 50 g to an ox, Bos taurus, with a mass of 220 kg. The scientists added indigestible particles to the animals’ food and timed how long the particles stayed in the digestive system. The results for 24 different mammal species are shown in Figure 1.2. Figure 1.2 The scientists concluded that food stays longer in the digestive systems of larger mammals compared with smaller mammals. (c)Discuss the evidence from Figure 1.2, for and against the statement that food stays longer in the digestive systems of larger mammals. [4] [Total: 9 marks] 100 trendyline

2 (a)Figure 2.1 shows the human heart and the main blood vessels. The functions of the parts of the heart and some of the blood vessels are given in Table 2.1. Figure 2.1 Complete Table 2.1. [4] Table 2.1 function letter on Figure 2.1 name structure that separates oxygenated and deoxygenated blood structure that prevents backflow of blood from ventricle to atrium blood vessel that carries deoxygenated blood chamber of the heart that contains deoxygenated blood 101 trendyline

(b)A group of students used a heart monitor to record the pulse rate of an athlete during a 5000-metre race. The recordings started just before the race began and ended just after