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 71:

  

  In the diagram, the genotypic ratio of the offspring of the cross is

  Options:
  A) 1:2
  B) 1:2:1
  C) 1:1:1:1
  D) 3:1
  Show Answer
  The correct answer is B .
• Question 72: Radial symmetry is a future common to Options:
  A) platyhelminthes
  B) nematodes
  C) coelenterates
  D) arthropods
  Show Answer
  The correct answer is C .
• Question 73:

  In monohybrid inheritance, if an organism carries two different alleles for a particular gene, it is called:

  Options:
  A) Homozygous
  B) Dominant
  C) Heterozygous
  D) Recessive
  Show Answer
  The correct answer is C .
• Question 74: The stem of a typical aqautic plant usually has many Options:
  A) air cavities
  B) intercellular space
  C) water cavities
  D) water conducting cells
  Show Answer
  The correct answer is A .
• Question 75: Circulation of blood to all parts of the body except the lungs is through Options:
  A) the pulmonary artery
  B) systemic circulation
  C) the lympahatic system
  D) pulmonary circulation
  Show Answer
  The correct answer is B .
• Question 76: The stem differs from the root in having the xylem and phloem strands Options:
  A) on the same radii
  B) scattered
  C) on alternate radii
  D) towards the pith
  Show Answer
  The correct answer is A .
• Question 77: In a water culture experiment, a plant showed poor growth and yellowing of the leaves. These may be due to deficiency in Options:
  A) copper
  B) iron
  C) magnesium
  D) calcium
  Show Answer
  The correct answer is B .
• Question 78:

  The body of a snail is divided into head?

  Options:
  A) thorax and abdomen
  B) visceral mass and abdomen
  C) thorax and foot
  D) visceral mass and foot
  Show Answer
  The correct answer is D .
• Question 79: Which of the following is the common to the mosquito, housefly and blackfly? Options:
  A) they undergo complete metamorphosis
  B) they are parasites of man
  C) their immature stages are aquatic
  D) their adults have two pairs of wings
  Show Answer
  The correct answer is A .
• Question 80:

  What is the term used to describe the maximum number of individuals of a species that an environment can support indefinitely?

  Options:
  A) Ecological niche
  B) Limiting factor
  C) Carrying capacity
  D) Density-dependent factor
  Show Answer
  The correct answer is C .