Biology 2019 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.

31. Rabbits cannot survive in an aquatic habitat because they have

  • A. fore and hind limbs
  • B. no gills
  • C. no fins
  • D. no scales

 32. Which of the following substances pass through the root cell membrane by osmosis?

  • A. Ceil sap
  • B. Carbon dioxide
  • C. Oxygen
  • D. Water

33. Trees in Savanna habitats usually have thick bark which mainly.

  • A. Reduces the rate of transpiration
  • B. Protect them from scorching sun
  • C. Protect them from heavy winds
  • D. Resist bush fires

34. Competition among individuals of a population increases the

  • A. Number of organisms
  • B. Availability of nutrient supplied
  • C. Survival of the fittest
  • D. Enlargement of the territory

35. In natural selection, Darwin proposed that evolution occurred because of the following conditions except

  • A. that nature selects those that will survive to reproduce their kind
  • B. there is a fierce competition among the offspring
  • C. that the weaker offspring are eliminated
  • D. food and other needs are abundant

36. Which of the following substances has the highest amount of energy in joules per unit weight?

  • A. Carbohydrates
  • B. Fats
  • C. Proteins
  • D. Vitamins

37. Which of the following pairs of scientists discovered the Rhesis factor in human blood?

  • A. Hooke and Lavine
  • B. Darwin and Landsteiner
  • C. Landsteiner and Lavine
  • D. Hooke and Darwin

38. The study of an individual organism or a single species of organism and its environment is

  • A. Artecology
  • B. Ecological concepts
  • C. Synecoloy
  • D. Biotic composers

39. Which of the following is a nitrifying bacterium?

  • A. Rhizobium
  • B. Nictrobacter
  • C. Azotobacter
  • D. Pseudomonas

40. Which of the following is the effect of using artificial pollination in plant breeding?

  • A. Production of healthy crops
  • B. Lengthening the maturity time of crops
  • C. Making crops susceptible to disease
  • D. Improvement of the variety of crops
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