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 1801: The most important substance necessary for the maintenance of life are carbon , oxygen Options:
  A) hydrogen, soil and enzymes
  B) hydrogen, salt and water
  C) nitrogen, salt and soil
  D) nitrogen, salt and water
  Show Answer
  The correct answer is D .
• Question 1802: The salinity of a brackish enviroment Options:
  A) increases immediately after rain
  B) increase at the end of rainy season
  C) Decrease with increase in micro-organisms
  D) increase during dry season
  Show Answer
  The correct answer is D .
• Question 1803: Fertilization in humans usually takes place in the Options:
  A) lower part of the uterus
  B) upper part of the uterus
  C) lower part of the oviduct
  D) upper part of the oviduct
  Show Answer
  The correct answer is D .
• Question 1804: The dark reaction of photosynthesis involves the Options:
  A) reduction of carbon(IV)oxide to organic
  B) release of oxygen and the splitting of water
  C) photolysis of water and the production of starch
  D) splitting of water into hydrogen
  Show Answer
  The correct answer is A .
• Question 1805: Parasitic form are NOT found among Options:
  A) platyhelminthes
  B) nematodes
  C) mollusces
  D) annelids
  Show Answer
  The correct answer is C .
• Question 1806: In which of the following crosses will all the female offspring be colour blind? Options:
  A) colour blind mother x colour blind father
  B) colour blind mother x normal father
  C) carrier mother x colour blind father
  D) carrier mother x normal father
  Show Answer
  The correct answer is A .
• Question 1807: The role of the male adult honey bee is to Options:
  A) clean the hive
  B) ventilates the hive
  C) mate with the queen
  D) care for the young
  Show Answer
  The correct answer is C .
• Question 1808:

  The under secretion of thyroxine in children results in?

  Options:
  A) goitre
  B) gigantism
  C) kwashiorkor
  D) cretinism
  Show Answer
  The correct answer is D .
• Question 1809: Serum differs from blood plasma because Options:
  A) contains blood cells and fibrinogen
  B) contains soluble food and mineral salt
  C) lacks the blood protein and fibrinogen
  D) lacks blood cells and albumin
  Show Answer
  The correct answer is C .
• Question 1810:

  Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?

  Options:
  A) the cells of their epidermis have no blood capillaries
  B) they have well developed respiratory structures
  C) their cylindrical shape gives high surface area to volume ratio
  D) their surface area to volume ratio is very low
  Show Answer
  The correct answer is C .