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 771: Which of the following is a feature of the population pyramid of a developing country? Options:
  A) long lifespan
  B) low birth rate
  C) low death rate
  D) short lifespan
  Show Answer
  The correct answer is C .
• Question 772: Excretory products responsible for the red, purple and blue colours of flowers are called Options:
  A) alkaloid
  B) tannins
  C) anthocyanins
  D) resins
  Show Answer
  The correct answer is C .
• Question 773: Tsetse fly is harmful to man because it is associated with the spread of Options:
  A) river blindness
  B) malaria
  C) sleeping sickness
  D) leprosy
  E) dysentry
  Show Answer
  The correct answer is C .
• Question 774: 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 775:

  What is the primary source of variation in a population?

  Options:
  A) Gene flow
  B) Mutation
  C) Natural selection
  D) Genetic drift
  Show Answer
  The correct answer is B .
• Question 776: Which of the following statements is NOT true of insectivorous plants? Options:
  A) They obtain part of their food by trapping and feeding on insects
  B) They attract insects simply because of pollination
  C) Thay can grow in soils poor in nitrogenous salts
  D) They can supplement their nitrgen supply by feeding on insects
  E) Example include butterworts, sundews and pitcher plants
  Show Answer
  The correct answer is B .
• Question 777: The complex relationship between the members of a community and between the community as a whole and its physical environment is Options:
  A) Ecosystem
  B) Habitat
  C) Environment
  D) Niche
  E) Micro habitat
  Show Answer
  The correct answer is A .
• Question 778: Carbon (IV) oxide content of the atmosphere is least affected by Options:
  A) cutting down and clearing of forests
  B) forest fires
  C) burning of fossil fuels
  D) plant and animal respiration
  Show Answer
  The correct answer is A .
• Question 779: 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 780:

  The development of big muscles by a wrestler is an example of?

  Options:
  A) acquired characteristics
  B) inherited characteristics
  C) mutation
  D) atrophication
  Show Answer
  The correct answer is A .