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 2221: One of the advantages of outbreeding is Options:
  A) pests tolerance
  B) disease resistance
  C) fast growth
  D) tall height
  Show Answer
  The correct answer is B .
• Question 2222: Which of the following is likely to have a higher concentration of the mitochondria? Options:
  A) Sperm cell
  B) white blood cell
  C) Egg cell
  D) Red blood cell
  Show Answer
  The correct answer is A .
• Question 2223:

  Which of the following is evidence of evolution?

  Options:
  A) All of the above.
  B) Similarities in embryonic development
  C) Fossils of extinct organisms
  D) Homologous structures in different species
  Show Answer
  The correct answer is A .
• Question 2224:

  

  An example of a plant having the placentation shown is

  Options:
  A) allamander
  B) hibiscus
  C) water lily
  D) pride of Barbados
  Show Answer
  The correct answer is D .
• Question 2225:

  Use the diagram to answer the question.

  The process of water loss and intake indicated by the arrows labelled i and ii are respectively

  Options:
  A) evaporation and osmosis
  B) osmosis and exhalation
  C) osmosis and diffusion
  D) urination and diffusion
  Show Answer
  The correct answer is B .
• Question 2226: The correct sequence of biomes from northern to southern Nigeria is Options:
  A) Guinea savanna → sudan savanna → tropical rain forest → sahel savanna → estuarine
  B) Estuarine → tropical rain forest → guinea savanna → sahel savanna
  C) Sahel savanna → tropical rain forest → estuarine → guinea savanna
  D) Sahel savanna → sudan savanna → guinea savanna → tropical rain forest → estuarine
  Show Answer
  The correct answer is D .
• Question 2227: Which of the following organisms has lost the pentadactyl limb structure? Options:
  A) Bat
  B) Fish
  C) Frog
  D) Pigeon
  Show Answer
  The correct answer is C .
• Question 2228: Mendel's second law of inheritance states that Options:
  A) alleles combine randomly
  B) alleles segregates independently
  C) alleles seperate predictably
  D) chromosomes segregates independently
  Show Answer
  The correct answer is B .
• Question 2229: Woman do not suffer from colour blindness because Options:
  A) the trait is sex-linked
  B) only men are colour blind
  C) the genes are recessive and sex-linked
  D) the genes occur on both the X and Y chromosomes
  Show Answer
  The correct answer is C .
• Question 2230: The organelles present in cells that are actively respiring and photosynthesizing are Options:
  A) lysosomes and ribosomes
  B) Golgi apparatus and endoplasmic reticulum
  C) nucleus and centrioles
  D) mitrochondria and chloroplast
  Show Answer
  The correct answer is D .