Temasek Sec 2024_Prelims_4E_BIO_P2_QP

No part of the paper is to be reproduced without the approval of the Principal of Temasek Secondary School. Name: Index Number: Class: _________ TEMASEK SECONDARY SCHOOL Preliminary Examination 2024 Secondary 4 Express BIOLOGY 6093/02 Paper 2 1 hour 45 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Do not open the booklet until you are told to do so. Write your name, index number and class on all the work you hand in. Write in dark blue or black pen. You may use an HB pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, glue or correction fluid. Section A Answer all questions. Write your answers in the spaces provided. Section B Answer one question. Write your answers in the spaces provided. The use of an approved scientific calculator is expected, where appropriate. The number of marks is given in brackets [ ] at the end of each question or part question. For Examiner’s Use Section A /70 Section B /10 Total /80 This document consists of 23 printed pages and 1 blank page.

2 SECTION A Answer all questions. 1 Fig. 1.1 shows flowers of the sweet pea plant. Fig. 1.1 (a) Using information from Fig. 1.1, suggest how sweet pea flowers might be pollinated. Give a reason for your answer. ………………………………………………………………………………………….. ……………………………………………………………………………….…….…[1] (b) Fig. 1.2 shows a developing fruit and the remains of a flower. Fig. 1.2

3 (i) Name the parts labelled A to D in Fig. 1.2. A…..………………................. B ……………………………… C……………………………… D ……………….…..………… [2] (ii) State the role played by part E during the flowering stage. ……………………………………………………………………………….…[1] (iii) Circle and name the part of the flower on Fig. 1.2 that has a similar role to the vagina. Explain how they are similar. ………………………………………………………………………………….… ………………………………………………………………………………….[2] [Total: 6] 2 Tumours are group s of abnormal cells that divide uncontrollably, forming lumps or growth. Tumours that invade or spread into other tissues are called cancer. Fig. 2.1 shows where three of the same type of tumour were found in a patient. Fig. 2.1 (a) Suggest and explain one of the patient’s habits that could have increased his risk of lung cancer. …………………………………………………………………………………………. ……………………………………………………………………………….………[1] tumours

4 (b) Suggest how the tumour in the lungs affects his breathing. …………………………………………………………………………………………. …………………………………………………………………………………………. …………………………………………………………………………………………. …………………………………………………………………………………………. …………………………………………………………………………………………. …………………………………………………………………………………………. …………………………………………………………………………….…………[