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 151: The substance that is responsible for optical dominance in plants is known as Options:
  A) gibberellin
  B) tannin
  C) auxin
  D) kinin
  Show Answer
  The correct answer is C .
• Question 152:

  

  In the diagram, the part labelled I is the

  Options:
  A) xylem
  B) phleom
  C) root hairs
  D) cortex
  Show Answer
  The correct answer is C .
• Question 153: The axial skeleton is found in the Options:
  A) skull, ribs, vertebral column and breast bone
  B) skull, humerus,vertebral column and ribs
  C) breastbone, clavicle, ribs and vertebral column
  D) femur, sternum,ulna and skull
  Show Answer
  The correct answer is A .
• Question 154: Which of the substance listed below is a trace element of plants? Options:
  A) Potassium
  B) Sodium
  C) Copper
  D) Phosphate
  E) Nitrate
  Show Answer
  The correct answer is C .
• Question 155: Which of the following adaptations is NOT concerned with the flight of birds? Options:
  A) Streamlined shape
  B) Presence of powerful muscles
  C) Reduced body weight
  D) Broad sternum
  E) Webbed feet
  Show Answer
  The correct answer is E .
• Question 156: The translucency spot in food test shows the presence of Options:
  A) fats
  B) starch
  C) water
  D) protein
  Show Answer
  The correct answer is A .
• Question 157: The part of the mammalian skin involved in excretion is the Options:
  A) sweat glands
  B) malpighian layer
  C) sebaceous gland
  D) horny layer
  Show Answer
  The correct answer is A .
• Question 158: 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 159: Which of these is not a function of the mammalian skin/ Options:
  A) Protection against bacteria infection
  B) Excretion of waste and water
  C) Production of vitamin d when exposed to sun light
  D) production of pigments to reduce temperature
  E) Regulation of body temperature
  Show Answer
  The correct answer is D .
• Question 160: Which of these is the terminal portion of the alimentary canal of a mammal? Options:
  A) Oesophagus
  B) Stomach
  C) Rectum
  D) Colon
  E) Appendix
  Show Answer
  The correct answer is C .