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 491: Sources of air pollutants are Options:
  A) industrial chimneys, burning fossil oils and river dam
  B) sulphur dioxide, acid rain and pesticides
  C) sulphur mines, vehicle exhausts and aerosols
  D) sewage, smoke and old vehicle
  Show Answer
  The correct answer is C .
• Question 492: The dry indehiscent, winged fruit formed from one one carpel is known as Options:
  A) Schizocarp
  B) Caryopsis
  C) Samara
  D) Nut
  E) Follicle
  Show Answer
  The correct answer is C .
• Question 493: Sample of different soil types are packed in glass tubes whose lower ends are plugged with cotton wool, if these tubes are suspended in a trough of water, water will rise highest after a few hours in Options:
  A) sand
  B) loamy
  C) clay
  D) humus
  Show Answer
  The correct answer is A .
• Question 494: Human beings require vitamins in their diet because vitamins Options:
  A) contain carbohydrates and fats
  B) prevent kwashiorkor
  C) stimulate the alimentary canal
  D) digest proteins in the body
  E) influence many important chemical processes in the body
  Show Answer
  The correct answer is E .
• Question 495: The function of the ossicles (malleus, incus and stapes) in the mammalian ear is Options:
  A) Transmission of vibrations
  B) Regulation of pressure
  C) Support of the inner ear
  D) Maintenance of balance during motion
  E) Secretion of oil
  Show Answer
  The correct answer is A .
• Question 496: Which of the following can bring about the greatest increase in the rate of transpiration? Options:
  A) Increased humidity
  B) Reduced temperature
  C) Reduced wind speed
  D) Reduced humidity
  Show Answer
  The correct answer is D .
• Question 497: The procaryotic cell type is characterized by a Options:
  A) complex cytoplasm in which different regions are poorly defined
  B) localization of different regions of the cell into tissues
  C) collection of organelles and macromolecular complexes
  D) simple cytoplasm with well defined regions
  Show Answer
  The correct answer is A .
• Question 498:

  Which of the following are components of the skeletal system in humans?

  Options:
  A) Cartilage and blood vessels
  B) Ligaments and tendons
  C) Muscles and nerves
  D) Bones and joints
  Show Answer
  The correct answer is D .
• Question 499: 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 500:
  

  Which level of the pyramid has the least total stored energy?

  Options:
  A) E
  B) F
  C) G
  D) H
  Show Answer
  The correct answer is D .