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 681: The correct increasing order of size for the cell components responsible for heredity is Options:
  A) chromosome → DNA → nucleus → gene
  B) DNA → gene → chromosome → nucleus
  C) chromosome → nucleus → DNA → gene
  D) DNA → gene → nucleus → chromosome
  Show Answer
  The correct answer is B .
• Question 682: 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 683:

  

  In the diagram, the experiment demonstrates

  Options:
  A) geotropism
  B) thigmotropism
  C) phototropism
  D) hydrotropism
  Show Answer
  The correct answer is A .
• Question 684: One disease NOT caused directly by bacteria is Options:
  A) malaria
  B) tuberculosis
  C) pneumonia
  D) tetanus
  E) cholera
  Show Answer
  The correct answer is A .
• Question 685: During the manufacture of food by plants, which of the following organism use energy from the sun? Options:
  A) anabaena
  B) sulfur bacteria
  C) nitrosomonas sp
  D) nitrobacter sp
  Show Answer
  The correct answer is A .
• Question 686: Which of the following food substances is digested in the stomach? Options:
  A) Carbohydrate
  B) Fats and oil
  C) Fats and proteins
  D) Proteins
  E) Carbohydrates and fats
  Show Answer
  The correct answer is D .
• Question 687: In a mammal, the placenta performs functions similar to those to the Options:
  A) lungs kidneys and digestive system
  B) lungs, heart and nervous system
  C) liver, intestines and reproductive system
  D) intestine, heart and digestive system
  Show Answer
  The correct answer is A .
• Question 688: Water in plants is removed as water vapour through the process of Options:
  A) diffusion
  B) osmosis
  C) evaporation
  D) transpiration
  Show Answer
  The correct answer is D .
• Question 689: Metabolic production of urea is carried out in the Options:
  A) urinary bladder and kidney
  B) Liver
  C) Pancreas
  D) Kidney and malphigian tubule
  Show Answer
  The correct answer is B .
• Question 690: The removal of a man’s pancreas by surgical operation can affect only the digestion of Options:
  A) Starch
  B) Starch, protein and fats
  C) Oils and fats
  D) Proteins
  E) Carbohydrates and fats
  Show Answer
  The correct answer is B .