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 1931:

  

  In the diagram, the genotypic ratio of the offspring of the cross is

  Options:
  A) 1:2
  B) 1:2:1
  C) 1:1:1:1
  D) 3:1
  Show Answer
  The correct answer is B .
• Question 1932: Which of the following food chains is in the correct sequence? Options:
  A) Weeds → Tadpole → Beetles → Fish → Man
  B) Weeds → Tadpole → Fish → Beetles → Man
  C) Tadpole → Beetles →Weeds → Man → Fish
  D) Man → Fish → Beetles → Tadpole → Weeds
  E) Fish → Beetles → Weeds → Man → Tadpoles
  Show Answer
  The correct answer is A .
• Question 1933: The causative agent of typhoid fever is Options:
  A) salmonella
  B) entamoeba
  C) escherichia
  D) shigella
  Show Answer
  The correct answer is A .
• Question 1934: insectivorous plants traps and kill their prey to derive Options:
  A) phosphorous
  B) calcium
  C) nitrogen
  D) zinc
  Show Answer
  The correct answer is C .
• Question 1935: The main organic substances found in the human body are Options:
  A) carbohydrates, proteins and salts
  B) salts, fats and proteins
  C) fat, carbohydrates and protein
  D) salts, fats and carbohydrates
  Show Answer
  The correct answer is C .
• Question 1936: Which of the following groups of diseases are associated with water? I Onchocerciasis II Schistosomiasis III Dracunculiasis IV Elephantiasis V Taeniasis Options:
  A) I, II and III
  B) II, IV and V
  C) II, III and IV
  D) I, II and V
  Show Answer
  The correct answer is A .
• Question 1937: The mutation theory of organic evolution was propounded by Options:
  A) Gregor Mendel
  B) Hugo de Vries
  C) Jean Lamarck
  D) Charles Darwin
  Show Answer
  The correct answer is B .
• Question 1938: 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 1939: One of the following causes Ebola fever Options:
  A) Bacteria
  B) Fungi
  C) Protozoa
  D) Viruses
  Show Answer
  The correct answer is D .
• Question 1940: An example of an endospermous seed is Options:
  A) been seed
  B) cashew nut
  C) cotton seed
  D) maize grain
  Show Answer
  The correct answer is D .