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 481: Which of the following organs or cells components are common to both the sporophytes and the gametophytes of a fern? Options:
  A) Rhizoids
  B) Roots
  C) Chloroplast
  D) Leaves
  Show Answer
  The correct answer is C .
• Question 482: A crucible of 5 g m weighed 10 gm after filling with fresh soil. it is then heated in an oven at 100°c for 1 hour. After cooling in a desiccator, the weight was 8 gm. The percentage of water in the soil is Options:
  A) 80%
  B) 60%
  C) 20%
  D) 40%
  Show Answer
  The correct answer is D .
• Question 483: An instrument used in measuring the speed of wind is Options:
  A) a barometer
  B) a wind gauge
  C) a wind vane
  D) an anemometer
  E) a hydrometer
  Show Answer
  The correct answer is D .
• Question 484: Which of these products obtained from analyzing sweat from skin is not an excretory product? Options:
  A) water
  B) Salts
  C) Dust
  D) Urea
  E) Urates
  Show Answer
  The correct answer is C .
• Question 485: A potometer with a leafy shoot weighed 18.9g initially and weighed 17.9g after one hour. From this it follow that Options:
  A) the shoot absorbed 1g of water per hour
  B) 1g of water per hour evaporates from the potometer
  C) the shoot lost 1g of water per hour
  D) the potometer water receded at the rate of 1g per hour
  E) the shoot was respiring and lost weight at rate of 1g per hour
  Show Answer
  The correct answer is C .
• Question 486: The excretory structure in the earthworm is the Options:
  A) malpighian tubule
  B) flame cell
  C) nephridium
  D) kidney
  Show Answer
  The correct answer is C .
• Question 487: Animals aestivate when the environment in which they live becomes Options:
  A) hot and dry
  B) cold and wet
  C) warm and humid
  D) windy and snowy
  Show Answer
  The correct answer is A .
• Question 488: Annelides differ from nematodas in that they Options:
  A) exhibits bilateral symmentry
  B) are triploblastic
  C) are metamerically segmented
  D) possess complete digestive system
  Show Answer
  The correct answer is C .
• Question 489: The function of ribosomes in cell is Options:
  A) protein synthesis
  B) starch synthesis
  C) transport of materials
  D) lipid storage
  Show Answer
  The correct answer is A .
• Question 490: Yellowing of leaves is a symptom associated with deficiency of Options:
  A) iron, calcium and magnesium
  B) nitrogen, sulphur and potassium
  C) sulphur, phosphorus and iron
  D) magnesium, nitrogen and iron
  Show Answer
  The correct answer is D .