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 1781: An ecological succcession often leads to Options:
  A) an increase in species diversity
  B) decrease in species diversity
  C) an unstable community
  D) the dispersal of species
  Show Answer
  The correct answer is A .
• Question 1782:

  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 1783:

  Which of the following options best describes adaptation for survival in organisms?

  Options:
  A) Adaptation is the inherited trait that increases an organism's chances of survival and reproduction in its environment
  B) Adaptation is the process by which organisms acquire new characteristics during their lifetime
  C) Adaptation refers to the ability of an organism to change its environment to better suit its needs
  D) Adaptation involves the development of new traits in response to changes in the environment
  Show Answer
  The correct answer is A .
• Question 1784: They key event in the transition of the amphibians from water to land is the Options:
  A) replacement of the gills with lungs
  B) possession of webbed limbs
  C) development of long hing limbs
  D) possession of tympanic membrane
  Show Answer
  The correct answer is A .
• Question 1785: The blood vessel which carries blood from the alimentary canal to the liver is the Options:
  A) hepatic artery
  B) hepatic vein
  C) hepatic portal vein
  D) mesenteric artery
  Show Answer
  The correct answer is C .
• Question 1786: In Amoeba, osmoregulation is carried out by the Options:
  A) pseudopodium
  B) food vacuole
  C) contractile vacuole
  D) nucleus
  Show Answer
  The correct answer is C .
• Question 1787: The difference and similarities among living things account for Options:
  A) diversity
  B) stability
  C) competition
  D) evolution
  Show Answer
  The correct answer is D .
• Question 1788: The vector that transmit trypanosome is the Options:
  A) butterfly
  B) housefly
  C) mosquito
  D) tsetse fly
  Show Answer
  The correct answer is D .
• Question 1789:

  Long neck in giraffe is used to illustrate the theory of

  Options:
  A) Use and Disuse
  B) Origin of species
  C) Origin of life
  D) Natural selection
  Show Answer
  The correct answer is A .
• Question 1790: Bacteria multiply rapidly by means of Options:
  A) budding
  B) fragmentation
  C) binary fission
  D) spore formation
  Show Answer
  The correct answer is C .