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 311: 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 312: What will be the result of the first filial generation (F₁) and the second filial generation (F₂) of a mono-hybrid cross between pure line normal-winged Drosophilia flies and pure line short-winged flies, if the gene for the normal wing is dominant? Options:
  A) F₁ flies all short-winged and F₂ flies all normal-winged
  B) F₁ flies all normal and F₂ flies all short-winged
  C) F₁ flies all short-winged and three-quarters of F₂ flies are short-winged
  D) F₁ flies all normal-winged and three-quarters of F₂ flies are normal-winged
  Show Answer
  The correct answer is D .
• Question 313: The function of the red head in male Agama lizards is to Options:
  A) scare other males from the territory
  B) warn predators of the distastefulness of the animal
  C) attract female lizards for mating purposes
  D) conceal and camouflage the animal from predators
  Show Answer
  The correct answer is C .
• Question 314:

  The two key cations involved in the action potential of nervous transmissions are?

  Options:
  A) Na+ and Fe2+
  B) Mg2+ and K+
  C) Na+ and K+
  D) Fe2+ and Mg2+
  Show Answer
  The correct answer is C .
• Question 315:

  

  The main function of 6 is to

  Options:
  A) separate 5 from 7
  B) produce more of 5 and 7
  C) produce cork
  D) translocate water and mineral salt
  E) conduct carbondioxide to the other plant
  Show Answer
  The correct answer is B .
• Question 316: The heart of the adult frog consist of Options:
  A) two auricles and two ventricles
  B) one auricle and one ventricle
  C) two ventricle and one auricle
  D) one ventricle and two auricles
  Show Answer
  The correct answer is D .
• Question 317: Which of the following is a nitrogen-fixing blue-green algae of soil? Options:
  A) Rhizobium
  B) Nitrosomonas
  C) Clostridium
  D) Anabaena
  Show Answer
  The correct answer is D .
• Question 318: Which of the following helps in the clotting of blood? Options:
  A) Red blood cells
  B) White blood cells
  C) Plasma
  D) Platelets
  Show Answer
  The correct answer is D .
• Question 319: One of the following exist as colony Options:
  A) euglena
  B) paramecium
  C) spirogyra
  D) volvox
  Show Answer
  The correct answer is D .
• Question 320: In a population of living things, the parameters of size, height, weight and colour are examples of Options:
  A) discontinuous variation
  B) continuous variation
  C) physiological variation
  D) non-heritable variation
  Show Answer
  The correct answer is B .