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 91: The following are examples of oviparous animals except Options:
  A) crocodile
  B) dove
  C) rat
  D) tilapia
  Show Answer
  The correct answer is C .
• Question 92: In man, identical twins occur when Options:
  A) An ovum is fertilized by a sperm and then divide into two, each forming a separate embryo
  B) an ovum fertilized by two sperms and then divides into two, each forming an embryo
  C) two ova are fertilized at the same tine each forming an embryo
  D) two ova are fertilized by a single sperm each forming an embryo after fertilization
  E) one ovum first divides into two and each half is fertilized by a sperm before developing into an embryo
  Show Answer
  The correct answer is A .
• Question 93: The gland directly affecting metabolic rate, growth and development is known as Options:
  A) adrenal land
  B) thyroid gland
  C) mammary gland
  D) parathyroid gland
  Show Answer
  The correct answer is B .
• Question 94: The equation that can be used to summarize the process of anaerobic breakdown of sugar is Options:
  A) C₂H₁₂O₆ 2C₂H₅OH + 2CO₂
  B) 6Co₂ + 6H₂O C₆H₁₂O₆ + 6O₂
  C) C₆H₁₂O₆ + 6O₂ 6CO₂ + 6H₂O + enegy
  D) C₆H₁₂O₆ 2C₂H₅OH + 2CO₂ + energy
  Show Answer
  The correct answer is D .
• Question 95: The stunted growth of a leguminous plant suffering from nitrogen deficiency may be corrected by inoculating the soil with Options:
  A) denitrifying bacteria
  B) Saprophytic bacteria
  C) Rhizobium
  D) Nitrosomonas
  Show Answer
  The correct answer is C .
• Question 96: In which of the following tissue do the cells have the ability to divide? Options:
  A) Meristem
  B) Sclerenchyma
  C) Phloem
  D) Collenchyma
  E) Pith
  Show Answer
  The correct answer is A .
• Question 97:

  Aged erythrocytes are destroyed in the?

  Options:
  A) pancreas
  B) liver
  C) lymph nodes
  D) kidney
  Show Answer
  The correct answer is B .
• Question 98:

  The sequence of the one-way gaseous exchange mechanism in a fish is?

  Options:
  A) mouth --> operculum -> gills
  B) mouth -> gills > operculum
  C) operculum > gills -> mouth
  D) gills -> operculum --> mouth
  Show Answer
  The correct answer is B .
• Question 99: The kidneys of all vertebrates act as osmoregulators. This means that they Options:
  A) keep the composition of the plasma constant
  B) regulate osmotic processes
  C) control the volume of blood entering the kidneys
  D) decrease the osmotic pressure of the blood
  E) increase the osmotic pressure of blood
  Show Answer
  The correct answer is B .
• Question 100: Food chain refers to the feeding relationships between animals in a ______? Options:
  A) Family
  B) phylum
  C) community
  D) group
  Show Answer
  The correct answer is C .