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 71: Nitrifying bacteria are important because they Options:
  A) release nitrogen to the atmosphere
  B) convert atmospheric nitrogen to ammonia
  C) combine ammonia with nitrgen
  D) oxidize ammmonium salt to nitrates
  Show Answer
  The correct answer is D .
• Question 72: Which of the following is an example of intraspecific competition? Options:
  A) a lizard and an ant-eater chasing an insect
  B) a worker termite and a soldier in a limited
  C) a hawk and an eagle targeting the same chicken
  D) yam and potato shots growing out through the same window
  Show Answer
  The correct answer is D .
• Question 73: Which of the following disease is not sexually transmitted? Options:
  A) Gonorrhea
  B) Herpes
  C) Influenza
  D) Syphilis
  Show Answer
  The correct answer is C .
• Question 74: The best method of propagating sugarcane is by Options:
  A) Seeding sowing
  B) Layering
  C) Grafting
  D) Stem cuttings
  Show Answer
  The correct answer is D .
• Question 75: The anaerobic fermentation of a glucose molecule yields Options:
  A) 38 ATP molecules
  B) 2 ATP molecules and alcohol
  C) pyruvic acid and alcohol
  D) water and carbon (IV) oxide
  Show Answer
  The correct answer is B .
• Question 76:
  

  Which stage is found in the muscle of an infected pig?

  Options:
  A) 3
  B) 4
  C) 5
  D) 6
  Show Answer
  The correct answer is A .
• Question 77: The flame cells are used for excretion in Options:
  A) Fluke
  B) Nematode
  C) Bacteria
  D) Volvox
  Show Answer
  The correct answer is A .
• Question 78: What proportion of the offspring of a cross between two heterozygous parents will exhibit the recessive condition phenotypically Options:
  A) 1/4
  B) 1/2
  C) 3/4
  D) 4/4
  Show Answer
  The correct answer is A .
• Question 79:

  One of the functions of the xylem is?

  Options:
  A) strengthening the stem
  B) manufacturing food
  C) reducing loss of water
  D) conducting manufactured food
  Show Answer
  The correct answer is A .
• Question 80:

  Inheritable character/features possessed by an organism can be referred to as

  Options:
  A) Genes
  B) Locus
  C) Traits
  D) Allelo morphs
  Show Answer
  The correct answer is C .