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 81:

  What are the primary products of photosynthesis?

  Options:
  A) Carbon dioxide and water
  B) Glucose and oxygen
  C) Glucose and carbon dioxide
  D) Oxygen and water
  Show Answer
  The correct answer is B .
• Question 82:

  Which of the following is TRUE of the process of conjugation in Paramecium?

  Options:
  A) Micronucleus disintegrates
  B) Each ex-conjugant divides only once
  C) Macro nucleus undergoes division
  D) Each micronucleus divides twice
  Show Answer
  The correct answer is D .
• Question 83: The path followed by air as it passes through the lungs in mammals is Options:
  A) trachea → bronchi → bronchioles → alveoli
  B) bronchi → trachea → alveoli → bronchioles
  C) trachea → bronchioles → alveoli
  D) bronchioles → alveoli → bronchi →trachea
  Show Answer
  The correct answer is A .
• Question 84: 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 85: Soil with the finest particles is called Options:
  A) silt
  B) clay
  C) sand
  D) gravel
  Show Answer
  The correct answer is B .
• Question 86: The wings of a bat and those of a bird are examples of Options:
  A) convergent evolution
  B) continuous variation
  C) coevolution
  D) divergent evolution
  Show Answer
  The correct answer is A .
• Question 87: which of these worms is beneficial to man? Options:
  A) Hookworm
  B) Tapeworm
  C) Roundworm
  D) Earthworm
  E) Guinea worm
  Show Answer
  The correct answer is D .
• Question 88:

  Use the following information to answer the question below.

  I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .

  In which of the test tubes will glucose be detected after complete hydrolysis?

  Options:
  A) l and ll only
  B) ll and lll only
  C) l only
  D) l, ll and lll
  Show Answer
  The correct answer is B .
• Question 89: An organism having one pair of identical genes is Options:
  A) a heterozygote
  B) a hybride
  C) an allelomorph
  D) a homozygote
  E) a diploid
  Show Answer
  The correct answer is D .
• Question 90: Root hair have their origin from Options:
  A) Endodermis
  B) Pericycle
  C) Cortex
  D) Epidermis
  E) Xylem
  Show Answer
  The correct answer is D .