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 61: What is the genetic ratio of the F₂ generation if members of F generation are allowed to self-pollinate? Options:
  A) 1 tall : 3 short
  B) 3 tall : 1 short
  C) 1 tall : 1 short
  D) 4 short : 0 tall
  E) 4 tall : 0 short
  Show Answer
  The correct answer is B .
• Question 62: In a Mendelian cross of red and white varieties of the four O"clock plants, the F₁ generation expresses incomplete dominance by having flower which are Options:
  A) white
  B) red
  C) pink
  D) multicoloured
  Show Answer
  The correct answer is C .
• Question 63:

  Which of the following pairs of scientists discovered the Rhesis factor in human blood?

  Options:
  A) Hooke and Lavine
  B) Darwin and Landsteiner
  C) Landsteiner and Lavine
  D) Hooke and Darwin
  Show Answer
  The correct answer is C .
• Question 64: The outermost embryonic membrane in the mammal is the Options:
  A) amnion
  B) chorion
  C) allantois
  D) yolk sac
  Show Answer
  The correct answer is B .
• Question 65: What organelle is the site of photosynthesis in plants? Options:
  A) Chloroplasts
  B) Ribosomes
  C) Cytoplasm
  D) Mitochondria
  Show Answer
  The correct answer is A .
• Question 66: The greatest amount of energy will be obtained by the oxidation of 100kg of Options:
  A) meat
  B) butter
  C) sugar
  D) biscuits
  Show Answer
  The correct answer is B .
• Question 67:

  Irish potato is a

  Options:
  A) bulb
  B) tap root
  C) rhizome
  D) root tuber
  E) stem tuber
  Show Answer
  The correct answer is E .
• Question 68: Transpiration can be measured with a Options:
  A) photometer
  B) hygrometer
  C) potometer
  D) barometer
  Show Answer
  The correct answer is C .
• Question 69: Which of the following is the function of lymph? Options:
  A) Carries hormones round the body
  B) Transports nutrients and oxygen from blood capil
  C) Distributes heat uniformly round the body
  D) conveys amino acids and glucose fromthe small intestine to the liver
  Show Answer
  The correct answer is B .
• Question 70: Which one of the following animals is NEVER a secondary host of tapeworms? Options:
  A) cow
  B) Fish
  C) Pig
  D) Man
  E) Dog
  Show Answer
  The correct answer is D .