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 1891:

  

  Which of the following results is to be expected if the set up is left for several hours?

  Options:
  A) decrease in the size of the yam
  B) movement of the salt solution into the water
  C) decrease in the volume of water inside the yam
  D) movement of water from the salt solution into the yam
  Show Answer
  The correct answer is C .
• Question 1892: Water retention is highest in soils which are rich in Options:
  A) sand, poor in humus and devoid of clay
  B) clay and sand, but poor in humus
  C) clay and humus, but poor in sand
  D) clay, poor in humus and devoid of sand
  E) sand and humus, but poor in clay
  Show Answer
  The correct answer is D .
• Question 1893: Which of the structure listed below is peculiar to the axis vertebra? Options:
  A) Odontoid process
  B) Anterior zygapophysis
  C) Posterior zygapophysis
  D) Lateral spine
  E) Centrum
  Show Answer
  The correct answer is A .
• Question 1894: A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that Options:
  A) the shoot absorbed 1g of water per hour
  B) 1g of water per hour evaporates from the potometer
  C) the shoot lost 1g of water per hour
  D) the potometer water receded at the rate of 1g per hour
  E) the shoot was respiring and lost weight at rate of 1g per hour
  Show Answer
  The correct answer is C .
• Question 1895: Which of these statements is NOT true of insects? Options:
  A) They are anthropods
  B) Their body is divide into three distinct regions of head, thorax and abdomen
  C) Their thorax comprises three segments, only two of which bear a pair of appendages each
  D) Respiration is by means of trachea
  E) They undergo metamorphosis
  Show Answer
  The correct answer is C .
• Question 1896: Which of the following is an example of discontinuous variation observed in man? Options:
  A) Skin colours
  B) Tongue rolling
  C) Body weight
  D) Height
  Show Answer
  The correct answer is B .
• Question 1897: An organism X lives entirely on the waste products in another organism Y. In this association X is a Options:
  A) symbiont
  B) commensal
  C) saprophyte
  D) parasite
  E) epiphyte
  Show Answer
  The correct answer is B .
• Question 1898: Choose the sequence which represents the correct order of organisms in a food chain. Options:
  A) Grass, snake, toad, grasshopper, hawk
  B) Grass, grasshopper, toad, snake, hawk
  C) Grass, grasshopper, snake, toad, hawk
  D) Grass, snake, grasshopper, toad, hawk
  E) Grass, toad, snake, grasshopper, hawk
  Show Answer
  The correct answer is B .
• Question 1899: Human beings require vitamins in their diet because vitamins Options:
  A) contain carbohydrates and fats
  B) prevent kwashiorkor
  C) stimulate the alimentary canal
  D) digest proteins in the body
  E) influence many important chemical processes in the body
  Show Answer
  The correct answer is E .
• Question 1900: In tapeworm, the two structure that run throughout the length of the body are the Options:
  A) nerve cord and excretory duct
  B) sperm duct and the nerve cord
  C) genital pore and the excretory duct
  D) sperm duct and the genital pore
  Show Answer
  The correct answer is A .