2023 – JAMB BIOLOGY PAST QUESTIONS & ANSWERS CBT PRACTICE You can also check in for latest; 9JA Music Gospel Music Foreign Music 9 123456789101112131415161718192021222324252627282930 2023 - JAMB Biology Past Questions & Answers Cbt Practice 1 / 30 1. Which of the following eye defects is caused by the inability of the eye to focus light on the retina? a) Astigmatism b) Myopia c) Cataracts d) Glaucoma 2 / 30 2. Which of the following describes the inheritance of traits from parents to offspring? a) Adaptation b) Natural selection c) Evolution d) Genetics 3 / 30 3. Which of the following is the primary organ involved in gas exchange during respiration in humans? a) Bronchi b) Diaphragm c) Lungs d) Trachea 4 / 30 4. Which of the following options correctly identifies excretory organs in animals? a) Lungs, kidneys, and skin b) Heart, liver, and spleen c) Stomach, intestines, and bladder d) Brain, spinal cord, and nerves 5 / 30 5. Which of the following statements is true regarding the urinary tubule in the excretory system? a) The urinary tubule connects the kidneys to the bladder b) The urinary tubule regulates the water and electrolyte balance in the body c) The urinary tubule is responsible for the production of urine d) The urinary tubule is the site of filtration of blood 6 / 30 6. Which of the following is the most inclusive level of classification in the Linnaean system? a) Class b) Kingdom c) Phylum d) Domain 7 / 30 7. What is the definition of population ecology? a) The study of the distribution and abundance of individuals within a species b) The study of interactions between organisms and their physical environment c) The study of interactions between different populations in an ecosystem d) The study of evolutionary processes and their effects on populations 8 / 30 8. Which of the following is a characteristic feature of Kingdom Plantae? a) Lack of cell walls b) Presence of chloroplasts c) Ability to perform photosynthesis d) Heterotrophic mode of nutrition 9 / 30 9. Which of the following statements is true regarding sexual reproduction in organisms? a) It is a form of asexual reproduction where offspring are produced without the involvement of gametes b) It involves the fusion of gametes from two parents, resulting in offspring with genetic variation c) It does not involve the formation of gametes or the fusion of reproductive cells d) It involves the production of offspring through a single parent, resulting in genetically identical offspring 10 / 30 10. Which of the following best describes the concept of trophic levels in a functioning ecosystem? a) The levels of energy flow within an ecosystem b) The levels of biological diversity within an ecosystem c) The levels of ecological interactions within an ecosystem d) The levels of nutrient cycling within an ecosystem 11 / 30 11. Most fishes do not sink in water because of the presences of: I. swim bladder II. air bladder III. air sacs IV. air in spongy bones a) III and IV are correct b) I, II, III and IV are correct c) II and III are correct d) I and II are correct 12 / 30 12. Which of the following is the correct classification of carbohydrates? a) Phytonutrient b) Macronutrient c) Micronutrient d) Lipid 13 / 30 13. Which of the following statements about viruses is true? a) Viruses are living organisms b) Viruses require a host cell to replicate c) Viruses can reproduce outside of a host cell d) Viruses possess a cellular structure 14 / 30 14. Which of the following statements is true regarding cell growth? a) Cell growth is solely influenced by external factors b) Cell growth is a continuous process throughout the life of a cell c) Cell growth involves an increase in the number of organelles within a cell d) Cell growth occurs by cell division 15 / 30 15. Which of the following is NOT a method of reproduction in animals? a) Sporulation b) Asexual reproduction c) Sexual reproduction d) Budding 16 / 30 16. Which organs are part of the alimentary canal in the human digestive system? a) Oesophagus, pancreas, and small intestine b) Large intestine, appendix, and rectum c) Stomach, liver, and gallbladder d) Salivary glands, tongue, and pharynx 17 / 30 17. Which of the following represents the correct hierarchical organization of life from the smallest to the largest scale? a) Organs, tissues, cells, organisms, populations, communities, ecosystems b) Cells, tissues, organs, organisms, populations, communities, ecosystems c) Cells, organs, tissues, organisms, populations, communities, ecosystems d) Tissues, organs, cells, organisms, populations, communities, ecosystems 18 / 30 18. The term cell was given by a) Tatum b) De Bary c) Robert Hooke d) Schwann 19 / 30 19. Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize? a) Ammonification b) Denitrification c) Nitrification d) Nitrogen fixation 20 / 30 20. Which of the following factors primarily affects the distribution of organisms in an ecosystem a) Soil pH b) Day length c) Temperature d) Wind speed 21 / 30 21. Which of the following are components of the skeletal system in humans? a) Muscles and nerves b) Bones and joints c) Ligaments and tendons d) Cartilage and blood vessels 22 / 30 22. Which of the following is an example of conserving resources in an ecosystem? a) Introducing invasive species to an ecosystem b) Implementing sustainable fishing practices c) Excessive use of chemical fertilizers in agriculture d) Cutting down trees for timber production 23 / 30 23. Which type of reproduction involves the fusion of gametes from two parents? a) Sexual reproduction b) Asexual reproduction c) Budding d) Binary fission 24 / 30 24. Which of the following characteristics is typical of the phylum Arthropoda? a) Presence of a segmented body b) Endoskeleton made of bones c) Radial symmetry d) Closed circulatory system 25 / 30 25. Which of the following is a method of asexual reproduction in plants? a) Fertilization b) Seed dispersal c) Vegetative propagation d) Pollination 26 / 30 26. Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains? a) Red soils b) Yellow soil c) Laterite soil d) Black soil 27 / 30 27. Which of the following is an example of an abiotic ecological factor? a) Temperature b) Predation c) Competition d) Symbiosis 28 / 30 28. A biome characterized by hot summer, warm winter and treeless vegetation is a) Tropical deserts b) Savannah grassland c) Steppe grasslands d) Temperate deserts 29 / 30 29. Which processes are involved in nutrient cycling in a functioning ecosystem? a) Decomposition, evaporation, and precipitation b) Erosion, weathering, and sedimentation c) Respiration, photosynthesis, and transpiration d) Nitrogen fixation, denitrification, and ammonification 30 / 30 30. Which of the following statements about the heart is true? a) The heart is a muscular organ that contracts to circulate blood throughout the body b) The heart is responsible for the production of red blood cells c) The heart receives blood from the kidneys and filters waste products d) The heart pumps oxygenated blood to the lungs Your score is The average score is 44% Restart Cbt Please click the stars to rate the quiz Send feedback
