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 621: The fleshy base of a flower to which the different floral parts are attached is known as Options:
  A) calyx
  B) sepals
  C) Receptacle
  D) hypothalamus
  Show Answer
  The correct answer is C .
• Question 622: Which of the following group of organisms feeds directly on green plants? Options:
  A) Primary Consumers
  B) Secondary Consumers
  C) Producers
  D) Decomposers
  Show Answer
  The correct answer is A .
• Question 623:

  The mutation theory of organic evolution was propounded by?

  Options:
  A) Gregor Mendel
  B) Hugo de Vries
  C) Jean Lamarck
  D) Charles Darwin
  Show Answer
  The correct answer is B .
• Question 624: Fruits which develop without fertilization of the ovule are Options:
  A) false
  B) multiple
  C) aggrgate
  D) parthenocarpic
  Show Answer
  The correct answer is D .
• Question 625: 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 626: If a nursing mother is not producing enough milk, her hormonal system is probably deficient in Options:
  A) prolactin
  B) testosterone
  C) thyroxin
  D) insulin
  Show Answer
  The correct answer is A .
• Question 627:

  The four classes of cnidarian include the following except

  Options:
  A) Turbellaria
  B) Anthozoa
  C) Scyphozoa
  D) Cubozoa
  Show Answer
  The correct answer is A .
• Question 628:

  The greatest amount of energy would be obtained by the Oxidation of 100kg of

  Options:
  A) Meat
  B) Butter
  C) Sugar
  D) Biscuit
  Show Answer
  The correct answer is B .
• Question 629: Fehling's solution will readily change colour from blue to reddish colour when it is Options:
  A) mixed with sugar solution in the cold
  B) warmed or heated by itself
  C) mixed with reducing sugar in the cold
  D) warmed or heated with complex solution
  E) warmed with a solution of reducing sugar
  Show Answer
  The correct answer is E .
• Question 630: The most common means of transmiting the Acquired Immune Deficiency Syndrome (AIDS) is Options:
  A) from mother to child
  B) through blood transfusion
  C) through sexual intercourse
  D) through the sharing of needles
  Show Answer
  The correct answer is C .