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 61: A gene which expresses itself only in the homozygous condition is Options:
  A) a mutant
  B) dominant
  C) recessive
  D) lethal
  Show Answer
  The correct answer is C .
• Question 62: Blood circulation in a mammalian is said to be double because Options:
  A) it passes twice through the heart in a complete circuit
  B) it moves in both arteries and veins
  C) it circulates in both the heart and other organs
  D) the heart contain auricles and ventricles
  Show Answer
  The correct answer is A .
• Question 63:

  The curvature movement of plants in response to the stimulus of water is called

  Options:
  A) hydrotropism
  B) geotropism
  C) Phototropism
  D) thigmotropism
  Show Answer
  The correct answer is A .
• Question 64: A severe and long dry season is a characteristic feature of Options:
  A) Sahel Savanna
  B) Mangrove Swamps
  C) Sudan Savanna
  D) Guinea Savanna
  Show Answer
  The correct answer is A .
• Question 65:

  The most abundant group of organisms in the animal kingdom?

  Options:
  A) Mammalia
  B) Aves
  C) Insecta
  D) Annelida
  Show Answer
  The correct answer is C .
• Question 66:

  Which of the following is TRUE of the process of conjugation in Paramecium?

  Options:
  A) Micronucleus disintegrates
  B) Each ex-conjugant divides only once
  C) Macro nucleus undergoes division
  D) Each micronucleus divides twice
  Show Answer
  The correct answer is D .
• Question 67:

  The attachment of the embryo to the wall of the uterus is called

  Options:
  A) Ovulation
  B) Implantation
  C) Gametogenesis
  D) Placentation
  Show Answer
  The correct answer is B .
• Question 68:

  

  Use the diagram above to answer this question.

  Oxygenated blood is pumped to the entire body from the part labelled

  Options:
  A) IV
  B) lll
  C) ll
  D) l
  Show Answer
  The correct answer is A .
• Question 69: Which of the following sets is made up of decomposers? Options:
  A) Rhizophus, earthworm and protozoa
  B) Mushroom, rhizophus and bacteria
  C) Bacteria, earthworm and nematodes
  D) earthworm, sedges and platyhelminthes
  Show Answer
  The correct answer is B .
• Question 70: Which of the following instruments is used for determining turbidity of water? Options:
  A) Thermometer
  B) secchi disc
  C) rain guage
  D) Hydrometer
  E) Wind vane
  Show Answer
  The correct answer is B .