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 1831: The main function of the choroid is Options:
  A) protection of the eye ball
  B) transmission of light
  C) supply of nutrient to tissue of the eye
  D) converging light
  Show Answer
  The correct answer is C .
• Question 1832:

  In the enzyme (amlyase) reactions of starch → sugar

  Starch is referred to as the

  Options:
  A) substrate
  B) product
  C) enzyme
  D) enzyme-substrate complex
  E) reaction mixture
  Show Answer
  The correct answer is A .
• Question 1833: Which of the following elements is essential for the formation of haemoglobin? Options:
  A) Sodium
  B) Potassium
  C) Calcium
  D) Iron
  Show Answer
  The correct answer is D .
• Question 1834: In mammals, the exchange of nutrients and metabolic products occurs in the Options:
  A) lungs
  B) oesophagus
  C) trachea
  D) lymph
  Show Answer
  The correct answer is D .
• Question 1835: Which of the following food substances is digested in the stomach? Options:
  A) Carbohydrate
  B) Fats and oil
  C) Fats and proteins
  D) Proteins
  E) Carbohydrates and fats
  Show Answer
  The correct answer is D .
• Question 1836: Which of the following is lacking in the diet of a person with kwashiorkor? Options:
  A) proteins
  B) carbohydrates
  C) minerals
  D) vitamins
  Show Answer
  The correct answer is A .
• Question 1837: The richest source of vitamin A are Options:
  A) palm oil and groundnut oil
  B) palm oil and carrot
  C) rice and groundnut oil
  D) oranges and carrot
  Show Answer
  The correct answer is B .
• Question 1838:

  Which of the following is considered to be the first product of Photosynthesis?

  Options:
  A) Protein
  B) Starch
  C) Energised Chlorophyll
  D) Hydroxyl ions
  Show Answer
  The correct answer is B .
• Question 1839: The three important organs that are situated close to the stomach are Options:
  A) Kidney, liver and gall bladder
  B) pancreas, liver and kidney
  C) liver, kidney and spleen
  D) gall bladder, pancreas and spleen
  Show Answer
  The correct answer is D .
• Question 1840: Farmers practise crop rotation because it Options:
  A) helps to prevent soil erosion
  B) allows two crops to be planted at the same time
  C) helps to conserve soil fertility
  D) is an alternate to shifting cultivation
  Show Answer
  The correct answer is C .