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 1291: 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 1292: What do bacteria in root nodules derive from the host plant? Options:
  A) Protection and minerals
  B) Water and minerals
  C) Carbonhydrates and water
  D) Protection and carbohydrates
  Show Answer
  The correct answer is A .
• Question 1293: The following distrupts the balance in an ecosystem except Options:
  A) afforestation
  B) deforestation
  C) migration
  D) pollution
  Show Answer
  The correct answer is A .
• Question 1294:

  The genes crossing over occurs during?

  Options:
  A) fertilization
  B) mutation
  C) mitosis
  D) meiosis
  Show Answer
  The correct answer is D .
• Question 1295: Which of the following animals is cold blooded Options:
  A) Cat
  B) Lizard
  C) Whale
  D) Bird
  E) Horse
  Show Answer
  The correct answer is B .
• Question 1296:
  

  From the diagram above the optimal temperature for breeding cockroaches is

  Options:
  A) 15^oC
  B) 19^oC
  C) 24^oC
  D) 33^oC
  Show Answer
  The correct answer is C .
• Question 1297: Mammals are capable of producing hypertonic urine mainly because of re-absorption in the Options:
  A) Bowmans capsule
  B) Urethra
  C) Ureter
  D) Loop of henle
  Show Answer
  The correct answer is D .
• Question 1298: The lumbar vertebra when compared with a thoracic vertebra has a Options:
  A) longer neural spines
  B) wider neural canal
  C) thicker centrum
  D) shorter transverse process
  Show Answer
  The correct answer is C .
• Question 1299: Growth can best be determined in a population of Spirogyra by measuring the Options:
  A) total length of the filament
  B) total widths of the filaments
  C) rate of photosynthesis in the population
  D) dry weights of the organism
  Show Answer
  The correct answer is A .
• Question 1300: 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 .