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 811:

  Which of the following statements about viruses is true?

  Options:
  A) Viruses can reproduce outside of a host cell
  B) Viruses require a host cell to replicate
  C) Viruses possess a cellular structure
  D) Viruses are living organisms
  Show Answer
  The correct answer is B .
• Question 812: If the cross of a red-flowered plant with a white-flowered plant produces a pink-flowered plant, it is an example of Options:
  A) codominance
  B) incomplete dominance
  C) mutation
  D) linkage
  Show Answer
  The correct answer is B .
• Question 813: Another name for a fertilized egg is a Options:
  A) placenta
  B) zygote
  C) foetus
  D) ovum
  Show Answer
  The correct answer is B .
• Question 814: An organism found on a bare rock surface has features of algae and fungi. The organism is Options:
  A) an epiphyte
  B) a lichen
  C) a bryophyte
  D) a fern
  Show Answer
  The correct answer is B .
• Question 815: Which of the following ecological factors are common to both terrestrial and aquatic habitats? Options:
  A) Rainfall, temperature and light
  B) Salinity, rainfall and altitude
  C) Tides, wind, rainfall and altitude
  D) pH, salinity, rainfall and humidity.
  Show Answer
  The correct answer is A .
• Question 816: The community of plants in which the same species occur from year to year is the Options:
  A) annual species
  B) pioneer vegetation
  C) perennial species
  D) climax vegetation
  Show Answer
  The correct answer is D .
• Question 817: The pathogen that cause smallpox is Options:
  A) picornavirus
  B) peramyxovirus
  C) herpesvirus
  D) poxvirus
  Show Answer
  The correct answer is D .
• Question 818: Which of these is not a sampling method for determining population size? Options:
  A) capture and re-capture method
  B) complete census
  C) Transect method
  D) systematic sampling
  Show Answer
  The correct answer is D .
• Question 819: In a Mendelian cross of red and white varieties of the four O"clock plants, the F₁ generation expresses incomplete dominance by having flower which are Options:
  A) white
  B) red
  C) pink
  D) multicoloured
  Show Answer
  The correct answer is C .
• Question 820: Which of the following statements on the mammalian circulatory system is NOT true? Options:
  A) Blood in the pulimonary artery is richer in oxygen content than blood in the pulmonary vein
  B) The blood in the hepatic portal vein is the richest in food substance
  C) Blood flow is controlled by valves in the veins
  D) Arteries are generally thicker and larger than veins
  E) Fibrin helps in the formation of blood clot
  Show Answer
  The correct answer is A .