HomeClassroomJAMB Biology Past Questions & Answers JAMB Biology Past Questions & Answers By Classgist June 11, 2025 Classroom 0 Comments JAMB Biology Past Questions & Answers 1 / 11 1. when protein are broken down they provide A. oxygen B. carbonhydrate C. energy D. amino-acid E. carbon dioxide Correct Answer: Option D Explanation The end-product of the breakdown of protein is amino-acids and other simple products. 2 / 11 2. Given the equation: 6CO22 + 6H22O → C66H1212O66 + 6O22 {Under sunlight & Chlorophyll) The process represented by the above equation is? A. proteinsynthesis B. respiration C. photosynthesis D. transpiration 3 / 11 3. The following events take place during conjugation in spirogyra 1. The protoplasm of each of the conjugating cell separate from the cell wall to form a Gamete; the gamete of one filament passes through the conjugation tube to meet the gamete of the other filament 2. The zygote soon become surrounded by thick brown wall to become zygospore which burst after a short rest and germinate to produce a new filament 3. The nuclei of the gametes fuse to form a zygote 4. The protuberance meet and where they touch the cell-wall disappear so that a conjugation tube joining the two cell is formed 5. protuberance appear on the wall of the cell of two filament of spirogyra lying side by side opposite one another. Now what is the correct sequence in which the above sequence occur? A. 1,2,3,4,5 B. 1,2,4,5,3 C. 3,4,5,2,1 D. 5,4,1,3,2 E. 5,4,3,1,2 Correct Answer: Option D Explanation: Spirogyra reproduces sexually through conjugation. In this process, two filaments come close together and form small bridges called conjugation tubes. The contents of one cell move into the other and they fuse to form a zygote. This zygote gets a thick wall and survives through harsh conditions, while the rest of the plant dies 4 / 11 4. One of the function of xylem is A. strengthening the stem B. manufacturing food C. reducing loss of water D. conducting manufactured food E. storing unused sugar Correct Answer: Option A Explanation . Xylem plays an essential 'supporting' role providing strength to tissues and organs, to maintain plant architecture and resistance to bending. 5 / 11 5. the function of lenticels is A. to remove excess water in plant B. to absorb water from the atmosphere C. for gaseous exchange D. to absorb light E. to store food Correct Answer: Option C Explanation A lenticel is one of many raised pores in the stem of a woody plant that allows gas exchange between the atmosphere and the internal tissues. 6 / 11 6. The cilia in paramecium are use for A. respirating B. locomotion C. protection D. regulating food intake E. excretion Correct Answer: Option B Explanation Cilia have important functions in the life of Paramecium, such as locomotion through the surrounding water and ingestion of food into the cytostome. 7 / 11 7. A trawler on a fishing trip caught a type of animal with hairs on its body. This animal could have been A. An amphibian B. a reptile C. a shark D. a mammal E. a seagull Correct Answer: Option D Explanation We have aquatic mammals. These are mammals which depend on water either fully or partly. They have the qualities of mammals 8 / 11 8. People suffering from myopia A. can see near object clearly B. can see far away object clearly C. cannot see any object clearly D. are colour blind E. are able to see clearly in the dark Correct Answer: Option A Explanation Myopia is another name given to short- sightedness. Affected persons see close objects clearly but far objects are blurry and would take correction to get from a distance fixed on their retina. 9 / 11 9. Given the equation: 6CO22 + 6H22O → C66H1212O66 + 6O22 (Under sunlight & Chlorophyll) The oxygen given off during the above process is derived from A. sunlight B. chlorophyll C. carbon dioxide D. atmosphere E. water Correct Answer: Option E Explanation The oxygen given of by plants is from WATER which is split during photolysis(splitting of water by sunlight). 10 / 11 10. which of these type of skeleton is most appropriate for a cockroach? A. Hydrostatic skeleton B. Exoskeleton C. Endoskeleton D. Cartilaginous skeleton E. Bony skeleton Correct Answer: Option B Explanation Like most other insects, cockroaches have an exoskeleton, meaning their skeleton is located on the outside of their bodies. 11 / 11 11. A plant which grows on another plant without apparent harm to the host plant is called A. a parasite B. an epiphyte C. a saprophyte D. a predator E. a hermaphrodite Correct Answer: Option B Explanation Epiphytes, which differ from parasites in the sense that epiphytes grow on other plants for physical support and do not necessarily negatively affect the host. Hence, epiphytes show no apparent harm to the host plant. Your score isThe average score is 36% 0% Restart quiz Related Posts 100 Likely Questions & Answers From Lekki Headmaster About Author Classgist Add a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment:*Name:* Email Address:* Website: Save my name, email, and website in this browser for the next time I comment.
