UCE Biology 2019 Paper 1 Leave a Comment / By Admin / January 4, 2024 Welcome to your UCE Biology 2019 Paper 1 1. SECTION A (30 MARKS) Answer all questions in this section. Write the letter representing the correctanswer to each question in the boxes provided. None 2. Question 1 Which one of the following is a characteristic of a monocotyledonous stem? Have a distinct pith. Vascular bundles arranged in a ring. Scattered vascular bundles. Vascular bundles have cambium. None 3. Question 2 The lipase enzyme catalyses the breakdown of sucrose proteins fats maltose None 4. Question 3 The kind of solution which would make a fully turgid plant cell placed in it to shrink is more concentrated than the cell content less in quantity than the cell sap of the same concentration as the cell content more dilute than the cell content None 5. Question 4 Which one of the following features is common to both class insecta and class arachnida Having three pairs of legs Having three main body divisions Possession of antennae Possession of an exoskeleton None 6. Question 5 Which one of the following vectors transmits yellow fever? Tsetse fly Culex mosquito Female Anopheles mosquito Aedes mosquito None 7. Question 6 Which one of the following is a benefit of using manure? Reducing population of harmful organisms in soil Improving crumb structure of soil Maintaining adequate soil cover Preventing soil erosion None 8. Question 7 Figure 1 shows a food webWhich one of the following organisms in figure 1 is a secondary consumer? Eagle Grass Termite Hen None 9. Question 7 Figure 1 shows a food webWhich one of the following organisms in figure 1 is a secondary consumer? Eagle Termite Hen Grass None 10. Question 9 * Which 011e of the following pairs is made up of only major elements in plant nutritions? Boron and Chlorine. Molybdenum and Iodine. Manganese and Copper. Magnesium and Calcium. None 11. Question 8 Which one of the following pairs is made up of only major elements in plant nutritions? Manganese and Copper. Molybdenum and Iodine. Magnesium and Calcium. Boron and Chlorine. None 12. Question 8 Which 011e of the following pairs is made up of only major elements in plant nutritions? Molybdenum and Iodine. Manganese and Copper. Boron and Chlorine. Magnesium and Calcium. None 13. Question 9* Which one of the following pairs is made up of only major elements in plant nutritions? None 14. Question 10 During expiration in a bony fish,the operculum is forced open when the pressure in the buccal cavity decreases. pressure in the buccal cavity increases. floor of the buccal cavity is lowered. volume of the buccal cavity increases. None 15. Question 11 In which part of the nephron does reabsorption of sugars take place? Loop of Henle. Collecting duct. Proximal convoluted tubule . Distal convoluted tubule. None 16. Question 12 Where is the image of a far object formed in the eye of a short-sighted person? On the blind spot. In front of the retina. On the choroid. Behind the retina. None 17. Question 13 A potted plant placed horizontally on a rotating klinostat continues to grow in a horizontal direction because auxins are uniformly distributed in the shoot. migrate to the tip of the shoot. migrate to the dark side of the shoot. migrate to the illuminated side of the shoot. None 18. Question 14 Which one of the following characteristics can be used to identify a cervical vertebra? Presence of long neural spine and large centrum. vertebraterial canals and short neural spine. small transverse processes and narrow neural spine. small neural canal and metapophysis. None 19. Question 15 Which one of the following characteristics of flowers encourages cross pollination? Being unisexual. Stamens and pistil remain enclosed within petals. Anthers above the stigma. Being bisexual. None 20. Question 16 Which one of the following human characteristics exhibits discontinuous variation? Skin colour. Blood groups. Weight. Height. None 21. Question 16 Which one of the following human characteristics exhibits discontinuous variation? Weight. Blood groups. Skin colour. Height. None 22. Question 17 The function of sodium hydrogen carbonate in an experiment to show that carbon dioxide is necessary for photosynthesis is to; reduce oxygen. produce carbon dioxide. absorb carbon dioxide. produce water. None 23. Question 18 What is the effect of rapid elongation of the hypocotyl during seed germination? Plumule grows straight out of the ground. Cotyledon remains underground. Hypocotyl straightens. Cotyledon is carried above ground. None 24. Question 19 A normal man married to a normal woman had a haemophiliac child. Suggest the sex of the child with a reason. Female, because she inherited the trait from the ·normal father. Male,because he inherited the trait from the carrier mother. Female, because males do not suffer from haemophilia. Male, because he inherited the trait from the carrier father. None 25. Question 19 A normal man married to a normal woman had a haemophiliac child. Suggest the sex of the child with a reason. Male, because he inherited the trait from the carrier father. Female, because she inherited the trait from the ·normal father. Female, because males do not suffer from haemophilia. Male,because he inherited the trait from the carrier mother. None 26. Question 20 Which of the following pairs are correct products of aerobic respiration in both plants and animals? Lactic acid and water. Lactic acid and carbon dioxide. Carbcn dioxide and water. Alcohol and carbon dioxide. None 27. Question 21 Which one of the following responses are likely to occur in the human body when environmental temperature increases? Shivering. Increased metabolism. Contraction of the erector pill muscle. Vasodilation. None 28. Question 22 * Figure 2 represents part of a sensory neurone. None 29. Question 22 * Figure 2 represents part of a sensory neurone. None 30. Question 22 * Figure 2 represents part of a sensory neurone. None 31. Question 22 * Figure 2 represents part of a sensory neurone. None 32. Question 22 * Figure 2 represents part of a sensory neurone. None 33. Question 23 Which one of the following is a function of oestrogen in humans? Repairs the uterine lining. Causes degeneration of the corpus luteum. Causes ovulation. Causes Graafian follicle to develop. None 34. Question 24 Which one of the following is an adaptation of arteries to transport blood under high pressure? Their innermost layer is smooth. They have thick and elastic walls. They have wide lumen. Their walls are thin and inelastic. None 35. Question 24 Which one of the following is an adaptation of arteries to transport blood under high pressure? Their innermost layer is smooth. They have thick and elastic walls. Their walls are thin and inelastic. They have wide lumen. None 36. Question 24 Which one of the following is an adaptation of arteries to transport blood under high pressure? Their walls are thin and inelastic. They have thick and elastic walls. They have wide lumen. Their innermost layer is smooth. None 37. Question 25 Which one of the following bones is found in the human fore limb? Femur. Fibula. Tibia. Ulna. None 38. Question 26 Sperms in the mammalian male reproductive system are stored in the epididymis. prostate gland. seminiferous tubule. urethra. None 39. Question 26 Sperms in the mammalian male reproductive system are stored in the seminiferous tubule. prostate gland. epididymis. urethra. None 40. Question 27 Which one of the following characteristics belongs ta a fruit dispersed by water? Wings. Fibrous mesocarp Pericarp with line of weakness Hooks. None 41. Question 28 Which one of the following conditions increases the rate of transpiration? Low light intensity. High temperature. Still air. High atmospheric pressure. None 42. Question 29 The association between nitrogen fixing bacteria in the root nodules and the leguminous plant can best be described as mutualism. competition. commensalism. parasitism. None 43. Question 30 All the following conditions result from deficiency of vitamins of the B group except pellagra. failure of blood to clot. pernicious anaemia. beriberi. None 44. SECTION B (40 MARKS) Answer all questions in this section. Answers must be written in the spaces provided. None 45. Question 31* In the experiment,two glass tubes were filled with different soil samples A and B.The glass tubes were placed in a basin of water and left to stand for 5 days.The rise of water column in the each soil sample was measured and recorded each day for 5 days as shown in the table 1 None 46. SECTION C (30 MARKS} Answer any two questions from this section. Additional questions answered will not be marked. Answers to these questions must be written in the answer bookletsprovided. None 47. Question 34* (a)Describe the different types of immunity in humans.(06 marks)(b)Explain the role of blood in body defence.(04 marks)(c) Give any five ways in which the body immunity can be weakened.(05 marks) None 48. Question 32* Figure 3 is a diagram showing the uterus of a pregnant woman. Study it and answers questions that follow;(a)Name the parts labelled A,B,C and D. (02marks)A B C D (b)Give any one function for each of the parts labelled A,B,C and D. (04 marks)(c) State any two adaptations of part A for its function. (02 marks) 49. Question 33* (a)What kind of response is demonstrated when maggots placed in a choice chamber move towards the wet part?( 02 marks)(b)Give the importance of the response stated in (a) to the maggots. (02 marks)(c)Explain any three tropic responses. (04 marks)(d)Explain one significance of the tropic responses in;(i) providing support to plants. (1½ marks)(ii) aiding photosynthesis. (1½ marks) None 50. Question 35* (a) How is light from a nearby object focused on the retina of a humaneye? (08 marks)(b) (i) Explain why a long sighted person cannot see near objects clearly. (03 marks)(ii) Using a diagram, explain how long sightedness can becorrected None 51. Question 36* a) Give the meaning of each of the following terms:(i) Parasitism. (02 marks)(ii) Symbiosis. (02 marks)(b) How is a tapeworm adapted to its parasitic mode tapeworms in humans(03 marks)(c) Outline three control measures to prevent the spread or tapeworms in humans (03 marks) None 52. Question 37* (a) Describe how leaves of green plants are suited for photosynthesis .(10 marks)(b) Explain how each of the following substances is utilised by a plant;(i) Water absorbed. (02 marks)(ii) Food manufactured. (03 marks) None Time's upTime is Up!
