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 1061: In a Biuret test , some protein was mixed with sodium hydroxide solution. Which of the following chemicals should be added to the mixture for a positive result? Options:
  A) mercurous nitrate
  B) copper sulphate
  C) sodium carbonate
  D) silver nitrate
  Show Answer
  The correct answer is B .
• Question 1062:

  Pentadactyl plan of the fore limbs of frog, bird, horse, whale and man is a proof of?

  Options:
  A) spontaneous generation
  B) evolution
  C) locomotion
  D) creation
  Show Answer
  The correct answer is B .
• Question 1063:

  A biome characterized by hot summer, warm winter and treeless vegetation is

  Options:
  A) Steppe grasslands
  B) Temperate deserts
  C) Savannah grassland
  D) Tropical deserts
  Show Answer
  The correct answer is A .
• Question 1064: In which of the following does external fertilization takes place? Options:
  A) Toad
  B) Lizard
  C) Bird
  D) Cockcroach
  Show Answer
  The correct answer is A .
• Question 1065:

  

  Which of the following is an omnivore?

  Options:
  A) Praying mantis
  B) Hawk
  C) Mouse
  D) Grasshopper
  Show Answer
  The correct answer is C .
• Question 1066: The cell component that is present in a prokaryotic cell is the Options:
  A) Chloroplast
  B) Ribosome
  C) Mitochondrion
  D) Nuclear envelope
  Show Answer
  The correct answer is B .
• Question 1067: The substance that is responsible for optical dominance in plants is known as Options:
  A) gibberellin
  B) tannin
  C) auxin
  D) kinin
  Show Answer
  The correct answer is C .
• Question 1068: A tall plants crossed with a dwarf one produces offspring of which half are tall and half are dwarf. What are the genotypes of the parents? Options:
  A) TT, TT
  B) Tt, tt
  C) TT, tt
  D) Tt, Tt
  Show Answer
  The correct answer is B .
• Question 1069: The highest percentage of energy in an ecosystem occurs at the level of the Options:
  A) secondary consumer
  B) decomposers
  C) producers
  D) primary consumers
  Show Answer
  The correct answer is C .
• Question 1070: Which of the following statement is NOT correct with respect to inhalation in mammals? The Options:
  A) intercostal muscles contract
  B) diaphragm is raised
  C) ribs are raised
  D) Pressure of the thoracic cavity decreases
  Show Answer
  The correct answer is B .