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 51:

  The energy released by 1 gram of glucose is

  Options:
  A) 6 kcal
  B) 4 kcal
  C) 5 kcal
  D) 3 kcal
  Show Answer
  The correct answer is B .
• Question 52:

  

  Why is the part labelled 5 thicker than 6?

  Options:
  A) 5 is the left ventricle and 6 the right ventricle
  B) 6 is the left ventricle and 5 the right ventricle
  C) 5 receives blood from the left auricle and 6 from the right
  D) 5 pumps blood round the body and 6 pumps blood into the lungs
  E) 5 deals with oxygenated blood and 6 deals with deoxygenated blood
  Show Answer
  The correct answer is D .
• Question 53: One of the following diseases is caused by fungi Options:
  A) cassava mosaic
  B) coffee leaf rust
  C) leaf blight of cassava rossette
  D) disease of groundnut
  Show Answer
  The correct answer is B .
• Question 54: The wings of a bat and those of a bird are examples of Options:
  A) convergent evolution
  B) continuous variation
  C) coevolution
  D) divergent evolution
  Show Answer
  The correct answer is A .
• Question 55: Blood circulation in a mammalian 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 heart and other organs
  D) the heart contain auricles and ventricles
  Show Answer
  The correct answer is A .
• Question 56: The only caste in the termite colony are the members can feed themselves are the Options:
  A) reproductives
  B) workers
  C) nymphs
  D) soldiers
  Show Answer
  The correct answer is B .
• Question 57:

  Which of the following is most advanced in the evolutionary trend of animals?

  Options:
  A) Liverfluke
  B) Earthworm
  C) Snail
  D) Cockroach
  Show Answer
  The correct answer is D .
• Question 58: 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 59:

  

  The main function of 6 is to

  Options:
  A) separate 5 from 7
  B) produce more of 5 and 7
  C) produce cork
  D) translocate water and mineral salt
  E) conduct carbondioxide to the other plant
  Show Answer
  The correct answer is B .
• Question 60: The male reproductive organ of a flower is the Options:
  A) carpel
  B) stamen
  C) petal
  D) sepal
  Show Answer
  The correct answer is B .