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 1:

  In natural selection, Darwin proposed that evolution occurred because of the following conditions except

  Options:
  A) that nature selects those that will survive to reproduce their kind
  B) there is a fierce competition among the offspring
  C) that the weaker offspring are eliminated
  D) food and other needs are abundant
  Show Answer
  The correct answer is D .
• Question 2:

  The greatest amount of energy would be obtained by the Oxidation of 100kg of

  Options:
  A) Meat
  B) Butter
  C) Sugar
  D) Biscuit
  Show Answer
  The correct answer is B .
• Question 3:

  Which of the following soil types becomes less fertile due to the intense leaching caused by tropical rains?

  Options:
  A) Yellow soil
  B) Laterite soil
  C) Red soils
  D) Black soil
  Show Answer
  The correct answer is B .
• Question 4: The membrane surrounding the vacuole in a plant cell is called the Options:
  A) plasmalemma
  B) tonoplast
  C) nuclear membrane
  D) endoplasmic reticulum
  Show Answer
  The correct answer is B .
• Question 5: Some of the major elements required by plants are Options:
  A) Potassium, nitrogen, phosphorus, sodium, calcium
  B) Nitrogen, phosphorus, molybdenum, sodium, calcium
  C) Potassium, phosphorus, molybdenum, sodium, calcium
  D) Potassium, nitrogen, iron , sodium, calcium
  E) Potassium, nitrogen, phosphorus, silicon, cadmium
  Show Answer
  The correct answer is A .
• Question 6:

  

  The structure labelled 5 is the

  Options:
  A) neucleolus
  B) Golgi body
  C) mitochondrion
  D) vacuole
  Show Answer
  The correct answer is B .
• Question 7: The average number of individuals of a species per unit area of the habitat is the Options:
  A) population density
  B) population frequency
  C) population size
  D) population distribution
  Show Answer
  The correct answer is A .
• Question 8: Which of the following organs regulates the levels of water, salts , hydrogen ions and urea in the mammalian blood? Options:
  A) Liver
  B) Kidney
  C) Bladder
  D) Colon
  Show Answer
  The correct answer is B .
• Question 9: The modes of nutrition in Nitrobacter, Ascaris and Homo sapiens respectively are Options:
  A) photosynthetic , parasitic and holozoic
  B) chemosynthetic, parasitic and holozoic
  C) photosynthetic, parasitic and heterophytic
  D) chemosynthetic, holophytic and holozoic
  Show Answer
  The correct answer is B .
• Question 10: One of adaptation of Cactus opuntia to conserve water is the reduction of Options:
  A) internodes
  B) stem to leaves
  C) leaves to spine
  D) flower size
  Show Answer
  The correct answer is C .