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 461: The amount of water loss from a leaf can be detected using Options:
  A) lime-water
  B) red litmus paper
  C) blue litmus paper
  D) blue cobalt chloride paper
  E) pink cobalt chloride paper
  Show Answer
  The correct answer is D .
• Question 462: Free nitrogen is released to the atmosphere by Options:
  A) Nitrogen-fixing bacteria
  B) nitrifying bacteria
  C) denitrifying bacteria
  D) saprophytic bacteria
  Show Answer
  The correct answer is C .
• Question 463:

  

  The type of joint between adjacent bones in the part labelled II is the

  Options:
  A) hinge joint
  B) ball and socket joint
  C) suture joint
  D) sliding joint
  Show Answer
  The correct answer is D .
• Question 464: The production of violet colouration, when dilute NaOH solution is added to a solution of food substance, followed by drops of 1% CuSO₄ solution while shaking, indicates the presence of Options:
  A) protein
  B) carbohydrates
  C) fats
  D) reducing
  Show Answer
  The correct answer is A .
• Question 465: Plants which can survive in places where the water supply is limited are Options:
  A) bryophytes
  B) mesophytes
  C) xerophytes
  D) hydrophytes
  E) pteridophytes
  Show Answer
  The correct answer is C .
• Question 466:

  Which of the following traits is not visible in a person with Down syndrome?

  Options:
  A) Short neck
  B) High muscle tone
  C) Small stature
  D) Slant eyes
  Show Answer
  The correct answer is B .
• Question 467: After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is Options:
  A) Euglena → water lily → Spirogyra → grass
  B) water lily → Spirogyra →grass → Euglena
  C) Spirogyra → Euglena → grass → water lily
  D) Euglena → Spirogyra → water lily → grass
  Show Answer
  The correct answer is C .
• Question 468: In plants which of the following is required in minute quantities for growth? Options:
  A) Copper
  B) Potassium
  C) Phosphorus
  D) Sodium
  Show Answer
  The correct answer is A .
• Question 469: One of the following is called emergency hormone in man. Options:
  A) Adrenalin
  B) Prolactin
  C) Testosterone
  D) Thyroxine
  Show Answer
  The correct answer is A .
• Question 470: Which of the following performs similar functions? Options:
  A) Ascospores ans ascocarp
  B) Antherozoids and rhizoids
  C) sorus and indusium
  D) Strobili and inflorescence
  Show Answer
  The correct answer is C .