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 521: When oil is poured into the breeding site of mosquitoes, it Options:
  A) deprives the larvae of water
  B) kills the adults
  C) suffocates the pupae
  D) slows doen egg development
  Show Answer
  The correct answer is C .
• Question 522: Ecological succession ends with the formation of a stable Options:
  A) niche
  B) population
  C) pioneer community
  D) climax community
  Show Answer
  The correct answer is D .
• Question 523: One of the following diseases is caused by fungi Options:
  A) cassava mosaic
  B) coffee leaf rust
  C) leaf blight of cassava rossette
  D) disease of groundnut
  Show Answer
  The correct answer is B .
• Question 524: Incomplete metamorphosis occurs in the Options:
  A) butterfly
  B) grasshopper
  C) mosquito
  D) housefly
  Show Answer
  The correct answer is B .
• Question 525: Which of these is not true? grass in the above food chain Options:
  A) trap all the sunlight
  B) trap a small percent of the sun energy
  C) are primary producers
  D) are eaten by primary consumers
  E) contains chlorophyll
  Show Answer
  The correct answer is A .
• Question 526: One of the characteristics of plants in the savanna is the Options:
  A) possession of thin, smoth barks
  B) possession of large tap root
  C) production of seedlings on mother plant
  D) possession of thick, flaky bark
  Show Answer
  The correct answer is D .
• Question 527: An organism having one pair of identical genes is Options:
  A) a heterozygote
  B) a hybride
  C) an allelomorph
  D) a homozygote
  E) a diploid
  Show Answer
  The correct answer is D .
• Question 528: Which of the following is an example of intraspecific competition? Options:
  A) a lizard and an ant-eater chasing an insect
  B) a worker termite and a soldier in a limited
  C) a hawk and an eagle targeting the same chicken
  D) yam and potato shots growing out through the same window
  Show Answer
  The correct answer is D .
• Question 529: Which of the following are adaptations of animals to aquatic habitats? Options:
  A) Gills, streamlined bodies and lateral lines
  B) Lateral line, streamlined bodies and lungs
  C) Gills, scaly skin and lungs
  D) Gills, streamlined bodies and spiracles
  Show Answer
  The correct answer is A .
• Question 530: In the standard experiment to show that oxygen is given off during photosynthesis, sodium bicarbonate is used to Options:
  A) neutralize the acid in water
  B) supply mineral salt to water plant
  C) supply carbondioxide for photosynthesis
  D) kill micro-organisms in water
  Show Answer
  The correct answer is B .