Download and practise with this ZIMSEC O-Level Biology Paper 1 June 2019 question paper. Useful for exam revision, past paper practice, and preparation in Zimbabwe.
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This is the ZIMSEC O-Level Biology question paper for Paper 1 from June 2019. Use it for exam practice under timed conditions. The paper code is 4025/1. Time allowed: 1 hour.
# ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level **BIOLOGY** **PAPER 1 Multiple Choice** **JUNE 2019 SESSION** Additional materials: Multiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended) Mathematical tables/Electronic calculator (optional) 1 hour **TIME 1 hour** ### INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your name, Centre number and candidate number on the answer sheet in the spaces provided unless this has already been done for you. 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 very carefully the instructions on the answer sheet. ### INFORMATION FOR CANDIDATES 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. ## Question 1 The diagram shows a safety symbol used in a science laboratory.  The symbol is a warning against A fires. B smoke. C radiation. D fans. ## Question 2 Which branch of Biology involves the study of cells? A botany B anatomy C ecology D cytology ## Question 3 Which carbohydrate is a polysaccharide? A glucose B maltose C starch D sucrose  A coolant. B catalyst. C solvent. D reagent. ## Question 5 The organelle that contributes to the osmotic properties of a plant cell is the A cell wall. B chloroplast. C cytoplasm. D vacuole. ## Question 6 Which feature of a red blood cell increases its surface area? A presence of haemoglobin B absence of a nucleus C thin membrane D thin cross section ## Question 7 The diagram shows an animal cell. In which part, A, B, C or D, does aerobic respiration take place?  ## Question 8 Which statement about enzymes is not true? A they are biological catalysts B they are used up during catalysis C they are substrate specific D they are protein in nature ## Question 9 Enzyme activity A increases with increase in pH then remains constant B decreases with increase in pH then remains constant C increases with increase in pH then decreases D decreases with increase in pH then increases ## Question 10 The diagram illustrates a mode of action of enzymes.  This mode of action is called A activation and binding. B activation and breakdown. C lock and catalysis. D lock and key. ## Question 11 Which factor is not necessary for the germination of seeds? A light B warmth C oxygen D moisture ## Question 12 The diagram shows a cross section of a dicotyledonous root. Which part, A, B, C or D, is responsible for transporting organic molecules?  ## Question 13 Which condition results in rapid transpiration? A low humidity B low light intensity C low temperature D low wind speed ## Question 14 Which one is an advantage of sexual reproduction? A increase in genetic variation B maintenance of desirable characteristics C intense colonisation of an area D reduction in competition with other species ## Question 15 The diagram shows a bean seed cut in half. In which part, A, B, C or D, is food stored?  ## Question 16 The diagram shows one of the steps in testing a leaf for starch.  What is liquid X? A water B limewater C alcohol D iodine solution ## Question 17 The graph shows results of an investigation on factors affecting the rate of photosynthesis.  Which factor is limiting the rate of photosynthesis when the curves are flat? A carbon dioxide B temperature C light D water ## Question 18 A long term effect of smoking on the respiratory system is A constriction of bronchioles. B destruction of alveoli. C increased mucus production. D paralysis of cilia. ## Question 19 Memory, intelligence and consciousness in the brain is controlled by the A cerebellum. B cerebrum. C hypothalamus. D medulla oblongata. ## Question 20 Shortage of vitamin A in the diet leads to A bleeding under the skin. B formation of soft bones. C poor healing of wounds. D reduced resistance to disease. ## Question 21 Which type of immunity will be acquired through vaccination? A natural active B artificial active C natural passive D artificial passive ## Question 22 The diagram shows the structure of a tooth. Which part, A, B, C or D, is the hardest?  ## Question 23 The diagram shows the positions of the human endocrine glands.  Which hormone is secreted by gland 3? A thyroxine B adrenaline C testosterone D glucagon ## Question 24 The diagram shows the growth curve of a rabbit.  Which is the best time to slaughter the rabbit? A 6 weeks B 8 weeks C 10 weeks D 12 weeks ## Question 25 The …