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 21:

  Blood circulation in a mammal is said to be double because

  Options:
  A) It passes twice through the heart in a complete circuit
  B) It moves in both arteries and veins
  C) It circulates in both the hands and other organs
  D) The heart contains auricles and ventricles
  Show Answer
  The correct answer is A .
• Question 22: The oxidative part of the respiratory process takes place in the Options:
  A) mitochondria
  B) ribosomes
  C) endoplasmic reticulum
  D) golgi bodies
  Show Answer
  The correct answer is A .
• Question 23: External ears of mammals consist of Options:
  A) pinna and tympanum
  B) pinna only
  C) auditory meatus only
  D) auditory meatus and pinna
  E) auditory meatus and tympanum
  Show Answer
  The correct answer is D .
• Question 24: Carbon (iv) oxide is added to the atmosphere when ________? Options:
  A) plants build-up organic compounds
  B) plants absorb mineral salts
  C) sugars are completely broken down in animals
  D) there is thunderstorm
  Show Answer
  The correct answer is A .
• Question 25: Epiphytes growing on the branches of trees provide an example of the relationship known as Options:
  A) parasitism
  B) commensalism
  C) saprophytism
  D) holophytism
  Show Answer
  The correct answer is B .
• Question 26: A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is Options:
  A) Protein
  B) Oil
  C) Carbohydrates
  D) Fat
  E) Fatty acid
  Show Answer
  The correct answer is A .
• Question 27: Gaseous exchange in Aves occurs in the Options:
  A) tracheoles
  B) bronchi
  C) air sacs
  D) trachea
  Show Answer
  The correct answer is C .
• Question 28: The following animals is an invertebrate except Options:
  A) flat worms
  B) round worms
  C) chordate
  D) protozoan
  Show Answer
  The correct answer is C .
• Question 29: Which of the following statements is not true of paramecium? Options:
  A) It is slipper-shaped
  B) The anterior end is blunt
  C) The gullet is lined with cilia
  D) It has an anal pore
  E) Its vacuole is stationary
  Show Answer
  The correct answer is E .
• Question 30:
  

  The part that will develop into an organ for feeling is labelled

  Options:
  A) IV
  B) III
  C) II
  D) I
  Show Answer
  The correct answer is D .