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: Most commercial fertilizers are rich in salts of Options:
  A) sodium, iron and calcium
  B) nitrogen, phosphorus and potassium
  C) iron, copper and nitrogen
  D) calcium, sodium and phosphorus
  Show Answer
  The correct answer is B .
• Question 2252:

  

  From the diagram above Birth control by vasectomy is achieved by severing the structure labelled

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is C .
• Question 2253: Which of the following is the direct consequence of transferring energy from one trophic level to another? Options:
  A) An increase in biomass
  B) A decrease in the efficiency
  C) An increase in the total numbers of resulting individuals
  D) A decrease in the resulting biomass
  Show Answer
  The correct answer is D .
• Question 2254: which of these worms is beneficial to man? Options:
  A) Hookworm
  B) Tapeworm
  C) Roundworm
  D) Earthworm
  E) Guinea worm
  Show Answer
  The correct answer is D .
• Question 2255: The following are ductless glands except Options:
  A) adrenal
  B) pancreatic
  C) parathyroid
  D) salivary
  Show Answer
  The correct answer is D .
• Question 2256: The sign + is used to indicate an association where an organism gains, while 0 is used where an organism is unaffected. An association indicated as +0 is known as Options:
  A) predation
  B) commensalism
  C) parasitism
  D) competition
  Show Answer
  The correct answer is B .
• Question 2257: What will happen wen two equal sized pieces of unripe pawpaw labelled X and Y are dropped into equal volumes of concentrated salt solution and distilled water respectively? Options:
  A) pawpaw X will become turgid
  B) both will increase in size
  C) pawpaw Y will become turgid
  D) both will decrease in size
  Show Answer
  The correct answer is C .
• Question 2258: Peripherals arrangement of vascular tissues in dicots is a characteristic of the internal structure of the Options:
  A) leaf
  B) petiole
  C) stem
  D) root
  Show Answer
  The correct answer is C .
• Question 2259: Mammals are capable of producing hypertonic urine mainly because of re-absorption in the Options:
  A) Bowmans capsule
  B) Urethra
  C) Ureter
  D) Loop of henle
  Show Answer
  The correct answer is D .
• Question 2260:

  

  The structure labelled 5 is the

  Options:
  A) sweat gland
  B) sebaceous gland
  C) blood vessel
  D) nerve fibre
  Show Answer
  The correct answer is A .