2025 FH Prelim BIO Paper 2

1 Candidate Name: Class: Index No.: FUHUA SECONDARY SCHOOL Secondary Four Express PRELIMINARY EXAMINATION 2025 4E Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School Fuhua Secondary School BIOLOGY 6093/02 Paper 2 Candidates answer on the Question Paper No Additional Materials are required. DATE 1 September 2025 TIME 0800 – 0945 hrs DURATION 1 hour 45 minutes READ THESE INSTRUCTIONS FIRST Write your name, class and index number 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 PARENT’S SIGNATURE Section A Section B Total /70 /10 /80 Setter(s): Mr Owen Tan Vetter(s): Mr Nicholas Liu This document consists of 21 printed pages, including this page.

2 Section A Answer all questions. 1 Fig. 1.1 shows a genus of single-celled green algae known as Chlorella. Chlorella is a type of phytoplankton; it is known for its high photosynthetic efficiency and its potential as a dietary supplement to support nutritional needs of the body. Fig. 1.1 (a) Organelle X enables Chlorella to perform photosynthesis. Identify organelle X. ………………………………………………………………………………………... [1] X

3 (b) Fig. 1.2 shows the relationship between light intensity and the relative rate of photosynthesis in Chlorella. Fig. 1.2 Briefly describe the relationship between light intensity and the relative rate of photosynthesis in Chlorella shown in Fig. 1.2. ………………………………………………………………………………………………. ………………………………………………………………………………………………. ………………………………………………………………………………………………. ………………………………………………………………………………………………. ………………………………………………………………………………………………. …………………………………………………………………………………………. [3]

4 (c) Fig. 1.3 shows the relationship between depth, rate of photosynthesis and respiration of Chlorella. Fig.