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 2331: During blood transfusion, agglutination may occur when Options:
  A) contrasting antigens reacts with contrasting antibodies
  B) similar antigens react with similar antibodies
  C) two different antigens react with each other
  D) two different antibodies react with each other
  Show Answer
  The correct answer is B .
• Question 2332: The production of violet colouration, when dilute NaOH solution is added to a solution of food substance, followed by drops of 1% CuSO₄ solution while shaking, indicates the presence of Options:
  A) protein
  B) carbohydrates
  C) fats
  D) reducing
  Show Answer
  The correct answer is A .
• Question 2333: 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 .
• Question 2334: The theory which supports the view that the large muscles developed by an athlete will be passed on to the offspring was proposed by Options:
  A) lamarck
  B) darwin
  C) mendel
  D) pasteur
  Show Answer
  The correct answer is A .
• Question 2335: If a farmer left his land uncultivated for five years before returning to it, he must be practising Options:
  A) modern agriculture
  B) strip cropping
  C) contour ridging
  D) crop rotation
  E) the bush fallow system
  Show Answer
  The correct answer is E .
• Question 2336: Roots of plants are normally Options:
  A) Positively phototropic
  B) Negatively geotropic
  C) Negatively hydrotropic
  D) Positively hydrotropic
  E) Negatively chemotropic
  Show Answer
  The correct answer is D .
• Question 2337: Organisms in an ecosystem are usually grouped according to their trophic level as Options:
  A) carnivores and epiphytes
  B) consumers and parasites
  C) producers and consumers
  D) producers and saprophytes
  Show Answer
  The correct answer is C .
• Question 2338: In which of the following groups of animals is the malpighian tubule found? Options:
  A) Lizards, snakes and frogs
  B) Crickets, houseflies and grasshoppers
  C) Millipedes, centipedes and scorpions
  D) earthworms, roundworms and flatworms
  Show Answer
  The correct answer is B .
• Question 2339: Which of the following diseases can be contracted in areas with fast flowing rivers? Options:
  A) Schistosomiasis
  B) Elephantiasis
  C) Syphilis
  D) Onchoceriasis
  Show Answer
  The correct answer is D .
• Question 2340: In the onion bulb, food is stored in the Options:
  A) stem
  B) lateral buds
  C) cotyledons
  D) outer scale leave
  E) leaf base
  Show Answer
  The correct answer is E .