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 2041: The breaking down of food in the alimentary canal is called Options:
  A) digestion
  B) egestion
  C) excretion
  D) ingestion
  Show Answer
  The correct answer is A .
• Question 2042: Which of these is not an enzyme? Options:
  A) Pepsin
  B) Gastrin
  C) Amylase
  D) Chymotrypsin
  E) Trypsin
  Show Answer
  The correct answer is B .
• Question 2043: What is the function of Trichocyst in paramecium? Options:
  A) Movement
  B) Defence
  C) Excretion
  D) Reproduction
  Show Answer
  The correct answer is B .
• Question 2044: 2H₂ → 2H₂ + O_2(g). The equation above represents a part of the light stage of photosynthesis. Which of the following must be presents for this reaction to occur? Options:
  A) Enzyme and light energy
  B) Carbondioxide and light energy
  C) Light energy and cholorphyll
  D) Chlorophyll and enzyme
  Show Answer
  The correct answer is C .
• Question 2045: Which of the following characterizes the white mangrove? Options:
  A) Prop roots
  B) Buttress roots
  C) Breathing roots
  D) Stilt roots
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  The correct answer is C .
• Question 2046: The study of how and why population size change over time is Options:
  A) Population estimation
  B) Population dynamics
  C) Population ecology
  D) Population cycle
  Show Answer
  The correct answer is B .
• Question 2047: Which of the following combinations differentiates a bony fish from a cartilaginous fish? I. Presence of gills II. Absence of gill slits III. Possession of bony skeleton IV. Possession of laterally compressed body V. Possession of dorso-ventrally compressed body Options:
  A) I, II and III
  B) I, III and IV
  C) II, III and IV
  D) II, III and V
  Show Answer
  The correct answer is A .
• Question 2048: One cubic centimeter of lymph is richer than an equal volume of blood in Options:
  A) erythrocytes
  B) leucocytes
  C) amino acid
  D) glucose
  Show Answer
  The correct answer is B .
• Question 2049: Which of the following is the lowest category of classification? Options:
  A) class
  B) species
  C) family
  D) genus
  Show Answer
  The correct answer is B .
• Question 2050: The phenotype of an individual can be summed up as the Options:
  A) totality of the expressed traits
  B) individual's physical appearance
  C) individual's entire genetical make-up
  D) physiological traits of individual
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  The correct answer is B .