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 211:

  Use the following information to answer the question below.

  I. Test tube containing cane sugar and water . ll. Test tube containing cane sugar and diluted acid. III. Test tube containing cane sugar and its degrading enzyme .

  In which of the test tubes will glucose be detected after complete hydrolysis?

  Options:
  A) l and ll only
  B) ll and lll only
  C) l only
  D) l, ll and lll
  Show Answer
  The correct answer is B .
• Question 212:

  

  Melanin and keratin are produced in the part labelled

  Options:
  A) 2
  B) 3
  C) 4
  D) 5
  Show Answer
  The correct answer is A .
• Question 213: Secondary thickening is initiated in a dicotyledonous stem by the Options:
  A) xylem parenchyma
  B) secondary phloem
  C) endodermis
  D) cambium
  Show Answer
  The correct answer is D .
• Question 214: The tips of some rice seedlings were cut off while some were left intact. Both were covered with a container which had not only one small hole to allow light through. After twenty-four hours it was observed that Options:
  A) the cut tips was bent away from the light
  B) the cut tips bent towards source of light
  C) the intact tips bent away from the light
  D) the intact tips bent towards the light
  E) both tips bent away from light
  Show Answer
  The correct answer is D .
• Question 215: The movement response of a cockroach away from a light source is Options:
  A) negative phototropism
  B) positive phototaxism
  C) negative phototropism
  D) postive phototropism
  Show Answer
  The correct answer is A .
• Question 216:

  

  Which of the following is an omnivore?

  Options:
  A) Praying mantis
  B) Hawk
  C) Mouse
  D) Grasshopper
  Show Answer
  The correct answer is C .
• Question 217: Plants that grow in an area that is neither too wet nor too dry are Options:
  A) xerophytes
  B) mesophytes
  C) epiphytes
  D) hydrophytes
  Show Answer
  The correct answer is B .
• Question 218: 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 219: Which of the following characterizes the white mangrove? Options:
  A) Prop roots
  B) Buttress roots
  C) Breathing roots
  D) Stilt roots
  Show Answer
  The correct answer is C .
• Question 220: An example of plant adaptation to a xerophytic environment is represented by the development of Options:
  A) fleshy tissue and reduced leaves
  B) broad canopy and extensive surface root system
  C) thick barks and broad leaves
  D) rough leaves and shallow root system
  Show Answer
  The correct answer is A .