Getting ready for your Post UTME Biology exam?
This blog post provides a comprehensive set of Post UTME Biology past questions and answers to help you revise and practice effectively. These questions are carefully selected from past exams of top Nigerian universities and are designed to cover key topics like cell biology, genetics, ecology, physiology, and more.
Use this resource to boost your confidence and increase your chances of success in the upcoming screening test.
Most Repeated Post UTME Biology Past Questions and Answers
1. The basic structural and functional unit of life is the:
A. tissue B. organ C. cell D. system
Answer: C
2. Which of the following is not a characteristic of living things?
A. Respiration B. Locomotion C. Growth D. Reproduction
Answer: B
3. The cell organelle responsible for energy production is the:
A. nucleus B. ribosome C. mitochondrion D. lysosome
Answer: C
4. In plants, the organ responsible for photosynthesis is the:
A. root B. leaf C. stem D. flower
Answer: B
5. A tissue is defined as:
A. a group of organs
B. a group of similar cells performing a specific function
C. a system of cells
D. a mixture of cells and tissues
Answer: B
6. Which of these is a non-green plant?
A. Fern B. Moss C. Mushroom D. Algae
Answer: C
7. Which part of the microscope controls the amount of light entering the object lens?
A. Mirror B. Objective lens C. Diaphragm D. Eyepiece
Answer: C
8. The movement of molecules from a region of higher concentration to a lower one is called:
A. diffusion B. osmosis C. active transport D. plasmolysis
Answer: A
9. Which organ is responsible for excretion in humans?
A. Liver B. Heart C. Pancreas D. Kidney
Answer: D
10. Which of the following is an autotrophic organism?
A. Toad B. Mushroom C. Maize D. Man
Answer: C
11. Which component of blood is responsible for clotting?
A. Plasma B. Red blood cells C. Platelets D. White blood cells
Answer: C
12. What is the main function of the xylem in plants?
A. Transport of food
B. Transport of water
C. Photosynthesis
D. Respiration
Answer: B
13. The brain and spinal cord make up the:
A. central nervous system
B. peripheral nervous system
C. autonomic nervous system
D. sympathetic nervous system
Answer: A
14. The primary function of red blood cells is to:
A. fight infection
B. transport oxygen
C. carry hormones
D. produce energy
Answer: B
15. Which of the following is a monocotyledon?
A. Bean B. Maize C. Groundnut D. Cotton
Answer: B
16. The male reproductive organ in a flower is the:
A. ovary B. style C. stamen D. carpel
Answer: C
17. The functional unit of the kidney is the:
A. nephron B. glomerulus C. Bowman’s capsule D. loop of Henle
Answer: A
18. Which of the following is not an excretory product in plants?
A. Oxygen B. Water C. Carbon dioxide D. Urine
Answer: D
19. In vertebrates, the part of the eye responsible for focusing light is the:
A. iris B. retina C. lens D. pupil
Answer: C
20. The part of the flower that becomes the fruit after fertilization is the:
A. petal B. ovary C. anther D. style
Answer: B
21. The breakdown of food in the presence of oxygen is known as:
A. fermentation B. photosynthesis C. anaerobic respiration D. aerobic respiration
Answer: D
22. The part of the brain that controls breathing is the:
A. cerebrum B. cerebellum C. medulla D. thalamus
Answer: C
23. The movement of water across a semi-permeable membrane is called:
A. diffusion B. osmosis C. transpiration D. plasmolysis
Answer: B
24. Which of the following helps in blood clotting?
A. Hemoglobin B. Leucocyte C. Fibrinogen D. Antibody
Answer: C
25. The main function of the large intestine is:
A. digestion B. absorption of nutrients C. absorption of water D. enzyme production
Answer: C
26. Which of the following organisms carries out anaerobic respiration?
A. Human B. Yeast C. Dog D. Cat
Answer: B
27. Which of these structures controls all activities in a cell?
A. Nucleus B. Ribosome C. Cell wall D. Cytoplasm
Answer: A
28. Which of the following organs produces bile?
A. Pancreas B. Gall bladder C. Liver D. Kidney
Answer: C
29. What is the product of photosynthesis?
A. Starch B. Water C. Oxygen D. Both A and C
Answer: D
30. What is the outermost layer of a plant cell?
A. Plasma membrane B. Cytoplasm C. Cell wall D. Chloroplast
Answer: C
Post UTME Biology Past Questions
31. Which hormone regulates sugar level in the blood?
A. Insulin B. Adrenaline C. Thyroxine D. Glucagon
Answer: A
32. Which of the following is not a part of the respiratory system?
A. Trachea B. Bronchi C. Larynx D. Esophagus
Answer: D
33. A good example of a vector is the:
A. mosquito B. housefly C. cockroach D. tsetse fly
Answer: A
34. Which blood group is the universal donor?
A. A B. B C. AB D. O
Answer: D
35. Which vitamin prevents rickets?
A. Vitamin A B. Vitamin B C. Vitamin C D. Vitamin D
Answer: D
36. What is the cause of malaria?
A. Mosquito bite B. Bacteria C. Plasmodium parasite D. Virus
Answer: C
37. Which part of the human body produces insulin?
A. Liver B. Kidney C. Pancreas D. Spleen
Answer: C
38. The process of removing metabolic waste from the body is:
A. excretion B. egestion C. digestion D. respiration
Answer: A
39. Which of the following is NOT a connective tissue?
A. Cartilage B. Bone C. Blood D. Skin
Answer: D
40. The green pigment in plants that captures sunlight is:
A. chloroplast B. chlorophyll C. carotene D. xanthophyll
Answer: B
41. The part of the brain that controls posture and balance is the:
A. medulla B. cerebellum C. cerebrum D. hypothalamus
Answer: B
42. Which organ stores bile?
A. Liver B. Gall bladder C. Pancreas D. Kidney
Answer: B
43. The mosquito lays its eggs in:
A. dry leaves B. wet grass C. stagnant water D. sand
Answer: C
44. Which of these is not a method of birth control?
A. IUD B. Condom C. Vasectomy D. Fertilization
Answer: D
45. Which of these diseases is not sexually transmitted?
A. Gonorrhea B. HIV/AIDS C. Syphilis D. Tuberculosis
Answer: D
46. The waste product of respiration is:
A. oxygen B. carbon dioxide C. nitrogen D. hydrogen
Answer: B
47. In plant reproduction, fertilization takes place in the:
A. ovary B. anther C. style D. stigma
Answer: A
48. Which mineral is necessary for healthy teeth and bones?
A. Potassium B. Sodium C. Calcium D. Iron
Answer: C
49. The largest organ in the human body is the:
A. liver B. lung C. skin D. brain
Answer: C
50. A population is best defined as:
A. all species in an area
B. number of individuals in a habitat
C. group of organisms of same species in an area
D. all plants and animals in a habitat
Answer: C
POST UTME BIOLOGY PAST QUESTIONS (51–100)
51. The process of producing energy in cells is called:
A. respiration B. photosynthesis C. fermentation D. osmosis
Answer: A
52. The site of photosynthesis in a plant cell is the:
A. vacuole B. mitochondria C. chloroplast D. nucleus
Answer: C
53. Which kingdom contains only prokaryotes?
A. Plantae B. Animalia C. Monera D. Protista
Answer: C
54. Which of these is NOT a function of the skeleton?
A. Support B. Movement C. Excretion D. Protection
Answer: C
55. Which blood vessel carries oxygenated blood from the lungs to the heart?
A. Pulmonary artery B. Aorta C. Vena cava D. Pulmonary vein
Answer: D
56. Which of the following causes tuberculosis?
A. Protozoa B. Virus C. Fungus D. Bacterium
Answer: D
57. The mosquito responsible for malaria is:
A. Culex B. Aedes C. Anopheles D. Tse-tse
Answer: C
58. The number of chromosomes in human body cells is:
A. 23 B. 46 C. 22 D. 44
Answer: B
59. An example of a water-borne disease is:
A. measles B. cholera C. HIV D. tuberculosis
Answer: B
Post UTME Biology Past Questions
60. Which of these organisms reproduces by binary fission?
A. Amoeba B. Earthworm C. Millipede D. Snail
Answer: A
61. The part of the ear responsible for balance is the:
A. cochlea B. pinna C. semicircular canals D. auditory canal
Answer: C
62. Which of the following is a reflex action?
A. Eating B. Saluting C. Sneezing D. Talking
Answer: C
63. The sense organ for smell is the:
A. skin B. ear C. tongue D. nose
Answer: D
64. A group of similar organisms that can interbreed is called a:
A. genus B. family C. species D. class
Answer: C
65. The part of the plant that anchors it to the ground is the:
A. leaf B. flower C. stem D. root
Answer: D
66. In an ecosystem, herbivores are known as:
A. secondary consumers B. producers C. primary consumers D. decomposers
Answer: C
67. Which of the following enzymes digests starch?
A. Protease B. Lipase C. Amylase D. Pepsin
Answer: C
68. The long tube that carries food from the mouth to the stomach is:
A. trachea B. oesophagus C. larynx D. pharynx
Answer: B
69. What type of reproduction involves one parent only?
A. Asexual B. Bisexual C. Sexual D. Multiple
Answer: A
70. In humans, fertilization takes place in the:
A. uterus B. ovary C. fallopian tube D. cervix
Answer: C
71. Which of the following animals undergoes metamorphosis?
A. Lizard B. Cat C. Toad D. Snake
Answer: C
72. The movement of blood around the body is called:
A. respiration B. circulation C. osmosis D. filtration
Answer: B
73. Which gas is used during respiration?
A. Nitrogen B. Carbon dioxide C. Oxygen D. Hydrogen
Answer: C
74. A trait that can be passed from parents to offspring is called:
A. learning B. heredity C. instinct D. development
Answer: B
75. The opening and closing of the stomata is regulated by:
A. palisade cells B. guard cells C. vascular bundles D. chloroplasts
Answer: B
76. Which vitamin helps in blood clotting?
A. A B. C C. D D. K
Answer: D
77. What type of skeleton does a cockroach have?
A. Endoskeleton B. Hydrostatic skeleton C. Cartilage skeleton D. Exoskeleton
Answer: D
78. Which organ produces urea in the body?
A. Kidney B. Skin C. Liver D. Pancreas
Answer: C
79. The structure used by Amoeba for movement is the:
A. flagella B. cilia C. pseudopodia D. tentacle
Answer: C
80. Which of the following is a characteristic of wind-pollinated flowers?
A. Bright petals B. Sticky pollen C. Scented nectar D. Long filaments
Answer: D
81. A group of tissues performing a specific function is called a(n):
A. cell B. organ C. system D. species
Answer: B
82. The structural support in plant cells is provided by:
A. nucleus B. vacuole C. chloroplast D. cell wall
Answer: D
83. The organ responsible for filtering blood is the:
A. liver B. heart C. kidney D. lung
Answer: C
84. The plants that live in dry areas are called:
A. hydrophytes B. xerophytes C. mesophytes D. halophytes
Answer: B
85. Which part of the female reproductive system receives the sperm?
A. Ovary B. Uterus C. Vagina D. Fallopian tube
Answer: C
86. An organism that feeds on dead organic matter is a:
A. producer B. consumer C. parasite D. saprophyte
Answer: D
87. The teeth used for tearing food are the:
A. molars B. premolars C. incisors D. canines
Answer: D
88. Which of these is a sexually transmitted infection?
A. Cholera B. Syphilis C. Measles D. Tuberculosis
Answer: B
89. The removal of waste products through the anus is called:
A. excretion B. secretion C. egestion D. digestion
Answer: C
90. Which blood group is the universal recipient?
A. A B. AB C. B D. O
Answer: B
91. In plants, transpiration mainly takes place through the:
A. stem B. stomata C. roots D. flowers
Answer: B
92. What is the sex chromosome pair for a female?
A. XX B. XY C. YY D. YX
Answer: A
93. The longest bone in the human body is the:
A. tibia B. fibula C. femur D. humerus
Answer: C
94. Which organ helps in the detoxification of harmful substances?
A. Kidney B. Liver C. Pancreas D. Lung
Answer: B
95. The process by which green plants manufacture their food is:
A. respiration B. phototropism C. transpiration D. photosynthesis
Answer: D
96. The condition of having two identical alleles is called:
A. heterozygous B. homozygous C. dominant D. recessive
Answer: B
97. Which of the following is a habitat for aquatic organisms?
A. Forest B. River C. Desert D. Savannah
Answer: B
98. The part of the plant where new cells are formed is the:
A. root cap B. meristem C. xylem D. phloem
Answer: B
99. What is the term for animals that feed on plants only?
A. Omnivores B. Carnivores C. Herbivores D. Insectivores
Answer: C
100. The transfer of pollen from anther to stigma is called:
A. fertilization B. germination C. pollination D. propagation
Answer: C
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With these carefully selected Post UTME Biology past questions and answers, you now have the right materials to sharpen your understanding of important topics like cells, respiration, reproduction, and human systems. Constant practice is key—so revisit these questions often, simulate timed tests, and aim for excellence in your university admission screening.