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 characteristics is typical of the phylum Arthropoda? a) Closed circulatory system b) Endoskeleton made of bones c) Radial symmetry d) Presence of a segmented body 2 / 30 2. 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) II and III are correct c) I, II, III and IV are correct d) I and II are correct 3 / 30 3. Which of the following statements about the heart is true? a) The heart pumps oxygenated blood to the lungs b) The heart is a muscular organ that contracts to circulate blood throughout the body c) The heart receives blood from the kidneys and filters waste products d) The heart is responsible for the production of red blood cells 4 / 30 4. Which of the following is the correct classification of carbohydrates? a) Micronutrient b) Macronutrient c) Lipid d) Phytonutrient 5 / 30 5. Which of the following is an example of an abiotic ecological factor? a) Temperature b) Predation c) Competition d) Symbiosis 6 / 30 6. Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains? a) Yellow soil b) Red soils c) Laterite soil d) Black soil 7 / 30 7. Which of the following options correctly identifies excretory organs in animals? a) Brain, spinal cord, and nerves b) Lungs, kidneys, and skin c) Heart, liver, and spleen d) Stomach, intestines, and bladder 8 / 30 8. Which of the following factors primarily affects the distribution of organisms in an ecosystem a) Soil pH b) Temperature c) Wind speed d) Day length 9 / 30 9. Which organs are part of the alimentary canal in the human digestive system? a) Stomach, liver, and gallbladder b) Salivary glands, tongue, and pharynx c) Oesophagus, pancreas, and small intestine d) Large intestine, appendix, and rectum 10 / 30 10. Which of the following is an example of conserving resources in an ecosystem? a) Cutting down trees for timber production b) Implementing sustainable fishing practices c) Introducing invasive species to an ecosystem d) Excessive use of chemical fertilizers in agriculture 11 / 30 11. Which of the following represents the correct hierarchical organization of life from the smallest to the largest scale? a) Tissues, organs, cells, organisms, populations, communities, ecosystems b) Cells, organs, tissues, organisms, populations, communities, ecosystems c) Cells, tissues, organs, organisms, populations, communities, ecosystems d) Organs, tissues, cells, organisms, populations, communities, ecosystems 12 / 30 12. Which of the following statements is true regarding cell growth? a) Cell growth involves an increase in the number of organelles within a cell b) Cell growth is solely influenced by external factors c) Cell growth occurs by cell division d) Cell growth is a continuous process throughout the life of a cell 13 / 30 13. What is the definition of population ecology? a) The study of interactions between organisms and their physical environment b) The study of the distribution and abundance of individuals within a species c) The study of interactions between different populations in an ecosystem d) The study of evolutionary processes and their effects on populations 14 / 30 14. Which of the following is the most inclusive level of classification in the Linnaean system? a) Class b) Kingdom c) Domain d) Phylum 15 / 30 15. Which of the following is a characteristic feature of Kingdom Plantae? a) Heterotrophic mode of nutrition b) Presence of chloroplasts c) Ability to perform photosynthesis d) Lack of cell walls 16 / 30 16. Which processes are involved in nutrient cycling in a functioning ecosystem? a) Respiration, photosynthesis, and transpiration b) Erosion, weathering, and sedimentation c) Nitrogen fixation, denitrification, and ammonification d) Decomposition, evaporation, and precipitation 17 / 30 17. Which type of reproduction involves the fusion of gametes from two parents? a) Budding b) Sexual reproduction c) Binary fission d) Asexual reproduction 18 / 30 18. 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 nutrient cycling within an ecosystem c) The levels of biological diversity within an ecosystem d) The levels of ecological interactions within an ecosystem 19 / 30 19. Which of the following describes the inheritance of traits from parents to offspring? a) Natural selection b) Genetics c) Adaptation d) Evolution 20 / 30 20. Which process in the nutrient cycle converts atmospheric nitrogen into a form that plants can utilize? a) Nitrification b) Denitrification c) Nitrogen fixation d) Ammonification 21 / 30 21. Which of the following is a method of asexual reproduction in plants? a) Seed dispersal b) Pollination c) Fertilization d) Vegetative propagation 22 / 30 22. Which of the following is NOT a method of reproduction in animals? a) Sporulation b) Asexual reproduction c) Sexual reproduction d) Budding 23 / 30 23. Which of the following statements about viruses is true? a) Viruses can reproduce outside of a host cell b) Viruses require a host cell to replicate c) Viruses possess a cellular structure d) Viruses are living organisms 24 / 30 24. Which of the following statements is true regarding the urinary tubule in the excretory system? a) The urinary tubule is responsible for the production of urine b) The urinary tubule connects the kidneys to the bladder c) The urinary tubule is the site of filtration of blood d) The urinary tubule regulates the water and electrolyte balance in the body 25 / 30 25. Which of the following eye defects is caused by the inability of the eye to focus light on the retina? a) Myopia b) Glaucoma c) Cataracts d) Astigmatism 26 / 30 26. Which of the following are components of the skeletal system in humans? a) Cartilage and blood vessels b) Ligaments and tendons c) Bones and joints d) Muscles and nerves 27 / 30 27. Which of the following is the primary organ involved in gas exchange during respiration in humans? a) Bronchi b) Trachea c) Diaphragm d) Lungs 28 / 30 28. A biome characterized by hot summer, warm winter and treeless vegetation is a) Tropical deserts b) Steppe grasslands c) Temperate deserts d) Savannah grassland 29 / 30 29. The term cell was given by a) Robert Hooke b) De Bary c) Schwann d) Tatum 30 / 30 30. 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 involves the production of offspring through a single parent, resulting in genetically identical offspring d) It does not involve the formation of gametes or the fusion of reproductive cells Your score is The average score is 44% Restart Cbt Please click the stars to rate the quiz Send feedback
