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 1: An organism that has been extensively used to test the chromosomes theory of heredity is Options:
  A) Drosophila melanogaster
  B) Muscar domestica
  C) Zea mays
  D) Homo sapiens
  Show Answer
  The correct answer is A .
• Question 2:

  Which of the following is the most inclusive level of classification in the Linnaean system?

  Options:
  A) Kingdom
  B) Phylum
  C) Domain
  D) Class
  Show Answer
  The correct answer is A .
• Question 3:

  If a DNA strand has a base sequence TCA, its complementary strand mustbe?

  Options:
  A) ATG
  B) TAG
  C) GAT
  D) AGT
  Show Answer
  The correct answer is D .
• Question 4: Circulation of blood to all parts of the body except the lungs is through Options:
  A) the pulmonary artery
  B) systemic circulation
  C) the lympahatic system
  D) pulmonary circulation
  Show Answer
  The correct answer is B .
• Question 5:

  

  Use the diagram above to answer this question.

  If the dogs are offspring of a monohybrid cross and the gene G for grey head is dominant cross over its allele g, the individual whose genotype is likely to be gg is

  Options:
  A) ll
  B) l
  C) IV
  D) lll
  Show Answer
  The correct answer is B .
• Question 6:

  The process by which a red blood cell placed in distilled water absorbs water until it burst and realease it's content into the surrounding is known as

  Options:
  A) osmosis
  B) plasmolysis
  C) turgidity
  D) hemolysis
  Show Answer
  The correct answer is D .
• Question 7:

  I. Stomata --> Spirogyra

  II. Alveoli --> Earthworm

  III. Malpighian tubule -> Mammal

  IV. Contractile vacuole -> Protozoa

  Which of the above structures is correctly matched with the organisms in which it is found?

  Options:
  A) II
  B) I
  C) IV
  D) III
  Show Answer
  The correct answer is C .
• Question 8: The butterfly is of great economic importance because Options:
  A) of its use in scientific studies
  B) it sucks nectar from flowers
  C) it adds to the beauty of the enviroment
  D) it polllinates flowers of crops and other plants
  Show Answer
  The correct answer is D .
• Question 9: In which of the following organisms does each cell combine the function of nutrition, reproduction and growth? Options:
  A) Rhizophus
  B) Dryopteris
  C) Brachymenium
  D) Spirogyra
  Show Answer
  The correct answer is D .
• Question 10:

  Floating microscopic heterotrophs are mostly grouped as

  Options:
  A) phytoplankton
  B) zooplankton
  C) microbes
  D) nekton
  Show Answer
  The correct answer is B .