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 2131: The three blood vessels that supply the mammalian alimentary canals are Options:
  A) segmented artery, hepatic artery and coeliac artery
  B) coeliac artery, anterior mesenteric artery and posteroir mesenteric artery
  C) coelic artery, segmental artery and hepatic artery
  D) hepatic artery, anterior mesenteric artery and posterior mesenteric artery
  E) hepatic portal vein, anterior mesenteric artery and posterior mesenteric artery
  Show Answer
  The correct answer is B .
• Question 2132: A severe deficiency of thyroxin results in Options:
  A) diabetes mellitus
  B) sexual underdevelopment
  C) cretinism
  D) gigantism
  Show Answer
  The correct answer is C .
• Question 2133:

  The part labelled a in the above diagram is used for

  Options:
  A) Detection of pressure in water
  B) Maintaining buoyancy in water
  C) Gaseous exchange
  D) Movement in water
  Show Answer
  The correct answer is C .
• Question 2134: One of the following is the unit of life Options:
  A) cell
  B) tissues
  C) organ
  D) system
  Show Answer
  The correct answer is A .
• Question 2135: In which of the features do bryophytes differ from pteridophytes? Options:
  A) Absence of flower
  B) Alternation of generation
  C) Dependency on water for reproduction
  D) Presence of vascular system
  Show Answer
  The correct answer is D .
• Question 2136: The umbrella shaped fruiting body of a fully developed mushroom is the Options:
  A) Pileus
  B) Mycelium
  C) Basidium
  D) Stipe
  Show Answer
  The correct answer is A .
• Question 2137: If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is Options:
  A) $\frac{1}{2}$
  B) $\frac{3}{4}$
  C) $\frac{1}{4}$
  D) 1
  Show Answer
  The correct answer is C .
• Question 2138: In fresh water marshes and swamps, the most important abiotic factors that organisms have to adapt to is Options:
  A) nature of substratum
  B) high salinity
  C) high temperature
  D) low pH
  Show Answer
  The correct answer is A .
• Question 2139: In the absence of oxygen, the pyruvic acid produced during glycolysis is converted to CO₂ and Options:
  A) water
  B) glycerol
  C) ethanol
  D) citric acid
  Show Answer
  The correct answer is C .
• Question 2140: The stream-lined shape of fishes is an adaptation for Options:
  A) Securing mates
  B) easy movement
  C) obtaining food
  D) defence and attack
  Show Answer
  The correct answer is B .