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 2251:

  

  The unrestricted pattern is represented by

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is B .
• Question 2252:

  Which of the following best describes physiological variation in biology?

  Options:
  A) Variations in the physiological processes and functions of organisms
  B) Differences in physical characteristics and appearance within a population
  C) Differences in behavior and social interactions among individuals
  D) Variations in the genetic makeup of individuals within a species
  Show Answer
  The correct answer is A .
• Question 2253: If the gall bladder of a mammal is damaged, which of the following will be most seriously affected? Options:
  A) Glycolysis
  B) Digestion of starch
  C) Digestion of fats and oil
  D) Digestion of proteins
  Show Answer
  The correct answer is C .
• Question 2254: One advantage of variation in a species population is that individuals Options:
  A) with favoured traits become dominant
  B) easily reach their reproductive age
  C) are easily recognised by mates
  D) are better adapted to changes
  Show Answer
  The correct answer is A .
• Question 2255: The chitin in the exoskeleton of many arthropods is strengthened by Options:
  A) lids
  B) proteins
  C) calcium compounds
  D) organic salt
  Show Answer
  The correct answer is C .
• Question 2256: Nitrogen- fixing micro-organisms in leguminous plants live symbiotically in the Options:
  A) root nodules
  B) tap root
  C) branch roots
  D) root hairs
  Show Answer
  The correct answer is A .
• Question 2257: Enzyme ptyalin acts on starch in the Options:
  A) oesophagus
  B) large intestine
  C) mouth
  D) stomach
  Show Answer
  The correct answer is C .
• Question 2258: A mixture of mercurous and mercuric nitrates is added to a food substance. A white precipitates is formed which on gentle heating turns red. The food substance is Options:
  A) Protein
  B) Oil
  C) Carbohydrates
  D) Fat
  E) Fatty acid
  Show Answer
  The correct answer is A .
• Question 2259:

  Which of the following substances pass through the root cell membrane by osmosis?

  Options:
  A) Ceil sap
  B) Carbon dioxide
  C) Oxygen
  D) Water
  Show Answer
  The correct answer is D .
• Question 2260: If an animal is very active and has good muscular control, it is likely to have well-developed Options:
  A) Olfactory lobes
  B) Cerebral hemisphere
  C) Optic lobes
  D) Cerebellum
  E) Spinal cord
  Show Answer
  The correct answer is D .