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 221: The bright coloured eye spots on the wings of moth are an example of Options:
  A) warning colouration
  B) disruptive colouration
  C) crypsis
  D) mimicry
  Show Answer
  The correct answer is D .
• Question 222:

  When a Spirogyra cell is immersed in a salt solution more concentrated than its cell sap,it?

  Options:
  A) remains unchanged
  B) takes tip water and burst
  C) absorbs a little water
  D) loses water and shrivels
  Show Answer
  The correct answer is D .
• Question 223: The mammalian organ through which nourishment and oxygen diffuse into a developing embryo is called Options:
  A) Amnion
  B) Chorion
  C) Umbilical cord
  D) Oviduct
  E) Placenta
  Show Answer
  The correct answer is E .
• Question 224: Gregor Mendel is regarded as the father of ______ Options:
  A) variation
  B) genetics
  C) mycology
  D) natural selection
  Show Answer
  The correct answer is B .
• Question 225:

  

  Use the diagram above to answer this question. The male inflorescence is labelled

  Options:
  A) i
  B) ii
  C) iii
  D) iv
  Show Answer
  The correct answer is A .
• Question 226: The relationship between a termite and the protozoam in its intestine is described as Options:
  A) predation
  B) saproplytism
  C) symbiosis
  D) parasitism
  Show Answer
  The correct answer is C .
• Question 227: The primary consumer in the food chain below is ................Green plants → Grasshopper → Lizard → Snake → Hawk Options:
  A) Grass hopper
  B) green plants
  C) hawk
  D) lizard
  Show Answer
  The correct answer is A .
• Question 228: The carrier of the hereditary character in plants and animal is the Options:
  A) Cell
  B) Nucleus
  C) Chromosome
  D) Chloroplast
  E) Gene
  Show Answer
  The correct answer is C .
• Question 229:

  Gaseous exchange in annelids is more advanced and efficient compared to flatworms because?

  Options:
  A) the cells of their epidermis have no blood capillaries
  B) they have well developed respiratory structures
  C) their cylindrical shape gives high surface area to volume ratio
  D) their surface area to volume ratio is very low
  Show Answer
  The correct answer is C .
• Question 230: A man who has the trait for colour blindness marries a normal woman. What percentage of their children would be sufferers, carriers and normal respectively Options:
  A) 25%, 25% and 50%
  B) 25%, 50% and 25%
  C) 50%, 25% and 25%
  D) 25%, 37.5% and 37%
  Show Answer
  The correct answer is A .