Biology Exam Past Questions and Answers | JAMB, WAEC and NECO

Biology is the study of life and living things. It can be divided into different areas that look at the structure, function, anatomy, and behavior of organisms.

• Question 551: The theory of use and disuse of organs was promulgated by Options:
  A) Alfred Wallace
  B) Charles Darwin
  C) Gene Lamarck
  D) Robert Hook
  Show Answer
  The correct answer is C .
• Question 552:

  The most important plant hormone is

  Options:
  A) cytokinin
  B) abscisic acid
  C) auxin
  D) gibberellin
  Show Answer
  The correct answer is C .
• Question 553: Erosion can be reduced along shape by Options:
  A) ridging across slope
  B) ridging up slope
  C) ridging down slope
  D) crop rotation
  E) bush fallowing system
  Show Answer
  The correct answer is A .
• Question 554: Parenchyma cells are serves as supporting tissue when they Options:
  A) contain chloroplast
  B) have crystals
  C) become flaccid
  D) become turgid
  Show Answer
  The correct answer is D .
• Question 555:

  When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because?

  Options:
  A) the tank was too small compared to the large-ocean
  B) the body cells of the fish swelled and burst as a result of the hypotonic fresh water
  C) the body cells of the fish shrank as their sap was hypertonic to the freshwater
  D) there was no food in the tank, so the fish starved
  Show Answer
  The correct answer is B .
• Question 556: The enzyme invertase will hydrolyze sucrose to give Options:
  A) maltose and glucose
  B) glycerol and fatty acid
  C) glucose and fructose
  D) mannose and galactose
  Show Answer
  The correct answer is C .
• Question 557: The seedlings in rice field were found to have thin lanky growth with reddish leaves and poor root development. This is because the soil lacks Options:
  A) sulphur
  B) phosphorus
  C) potassium
  D) iron
  Show Answer
  The correct answer is B .
• Question 558: The disaster that would have the least destructive impact on animal life and balance in nature is Options:
  A) chemical pollution
  B) forest fires
  C) oil spillage
  D) grasshopper pests
  Show Answer
  The correct answer is D .
• Question 559: Asexual reproduction does NOT occur in Options:
  A) Mucor, Spirogyra and Paramecium
  B) Penicillium, Paramecium and Amoeba
  C) Mucor, Rhizophus and Penicillium
  D) Amoeba, Spyrogyra and Mucor
  E) Rhizophus, Ascaris and Amoeba
  Show Answer
  The correct answer is E .
• Question 560: Both recessive and dominant characters are found Options:
  A) on different chromosomes in the cell
  B) at the same locus of a homologous chromosome
  C) at different loci of a homologous chromosome
  D) on the same chromatid in a chromosome
  Show Answer
  The correct answer is B .