(c) The student forgot to include a control vial with glass beads (no crickets). Explain why a control is necessary. (2 marks)
Below is a structured set of original questions (Section A: Multiple Choice, Section B: Structured/Free Response), followed by a detailed answer key and performance analysis guide. Subject: Junior Biology Olympiad Time: 1 hour 30 minutes (simulated) Total Marks: 60 Section A: Multiple Choice (30 marks) Questions 1 to 15. Each correct answer earns 2 marks. Select the single best answer.
(d) Name the principle illustrated by the independent assortment of these two genes. (1 mark) singapore junior biology olympiad past papers
(e) Describe one real-world application of Mendelian genetics in agriculture. (2 marks)
(d) If the experiment used germinating mung beans instead of crickets, how would the results differ? Why? (2 marks) (c) The student forgot to include a control
(c) If 320 offspring are produced, how many are expected to have purple flowers and pointed leaves? Show your working. (2 marks)
A student uses a respirometer to measure oxygen consumption in crickets at 20°C and 30°C. Subject: Junior Biology Olympiad Time: 1 hour 30
(a) List two structural adaptations of the alveolus that maximize gas exchange. (2 marks)