Biology 2018 Past Questions | JAMB

Study the following Biology past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

11. Which of the following structures is not a skeletal material?

  • A. Chitin
  • B. Cartilage
  • C. Bone
  • D. Muscle

 12. The reason why the flow of blood through the capillaries is very slow is

  • A. because the walls of Capillaries are very thin
  • B. to avoid high blood pressure
  • C. to ensure that the individual does not get dizzy
  • D. to allow adequate time for exchange of materials

13. Which of the following groups of organisms has kidney as the excretory organ?

  • A. Fishes, amphibians, birds, man
  • B. Fishes, amphibians, annelids, insects
  • C. Fishes, reptiles, birds, tapeworm
  • D. Fishes, protozoans, amphibians, man

14. Which of the following features is not a characteristic of arteries? Arteries

  • A. possess valves at internals throughout their length
  • B. have thick muscular and elastic walls
  • C. carry blood away from the heart
  • D. transport oxygenated blood with the exception of the pulmonary artery

15.

The graph below shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.

Which of the statements below is valid?

  • A. The bird’s blood was always warmer than that of the lizard
  • B. The body temperature of the bird varied less than that of the lizard during changes in environmental temperature
  • C. The body temperature of the bird remained constant despite changes in environmental temperature
  • D. The body temperature of the lizard was always close to that of the environmental temperature

16. The graph below(graph in Question 15) shows the results of a laboratory investigation which measured the body temperatures of a lizard and a bird under changing artificial conditions. Use it to answer the question.

What physiological term can used to describe the regulation of the body temperature of the of the Lizard?

  • A. Homeostasis
  • B. Homoithermy
  • C. Poikilothermy
  • D. Osmoregulation

17. The reason why hospitals use saline solutions as drip Instead of water is

  • A. because salt is a preservative
  • B. to prevent contamination of the body
  • C. to maintain the composition of body fluids
  • D. to increase the number of blood cells

18. The part of the ear which contains nerve cells sensitive to sound vibrations is the

  • A. cochlea
  • B. ampulla
  • C. tympanum
  • D. malleus

19. Spectacles with convex lenses correct long-sightedness by

  • A. converging the light rays before they enter the eye
  • B. diverging the light rays before they enter the eye
  • C. reducing the light intensity before it enters the eye
  • D. increasing the light intensity before it enters the eye

20. A seed of a flowering plant can best be described as

  • A. radicle and plumule
  • B. the developed ovule
  • C. the embryo and endosperm
  • D. developed ovary
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