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 1561: The highest level of ecological organization is the Options:
  A) ecosystem
  B) population
  C) biosphere
  D) niche
  Show Answer
  The correct answer is C .
• Question 1562: The transportation of oxygen and carbon (IV) oxide in mammals is carried out by Options:
  A) leucocytes
  B) thrombocytes
  C) phagocytes
  D) erythrocytes
  Show Answer
  The correct answer is D .
• Question 1563: The scarcity of food causes a sudden decrease in population size by Options:
  A) decreasing the reproductive rate
  B) bringing about immigration
  C) raising the mortalility rate
  D) minimizing the rate of competition
  Show Answer
  The correct answer is C .
• Question 1564: Euglene is an autotrophic organism because it Options:
  A) has flagella
  B) has plant and animal features
  C) is found in water
  D) can manufacture its food
  E) move fast
  Show Answer
  The correct answer is D .
• Question 1565:

  

  Use the diagram above to answer this question.

  Which of the organisms represented are notable agricultural pests?

  Options:
  A) ll and IV
  B) l and IV
  C) ll and lll
  D) l and lll
  Show Answer
  The correct answer is B .
• Question 1566: In the living cells, insufficient oxygen may cause a breakdown of glucose into Options:
  A) fatty acids
  B) lactic acids
  C) glycogen
  D) carbon dioxide
  Show Answer
  The correct answer is B .
• Question 1567: Insects visit flowers in order to Options:
  A) feed on the nectar
  B) deposit pollen on the stigma
  C) pollinate the flowers
  D) transfer pollen from anthers
  Show Answer
  The correct answer is A .
• Question 1568: A larger percentage of tropical soils tends to be acidic because they Options:
  A) contain large quantities of potash
  B) contain large quantities of lime
  C) lose a high proportion of their organic matter to running water
  D) lose lime and potash from the top soil through rain action
  Show Answer
  The correct answer is D .
• Question 1569: 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 .
• Question 1570: A plant which grows on another plant without apparent harm to the host plant is called Options:
  A) a parasite
  B) an epiphyte
  C) a saprophyte
  D) a predator
  E) a hermaphrodite
  Show Answer
  The correct answer is B .