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 581: The lowest unit of classification is the Options:
  A) class
  B) genus
  C) phylum
  D) species
  Show Answer
  The correct answer is D .
• Question 582: Carbon (iv) oxide is added to the atmosphere when ________? Options:
  A) plants build-up organic compounds
  B) plants absorb mineral salts
  C) sugars are completely broken down in animals
  D) there is thunderstorm
  Show Answer
  The correct answer is A .
• Question 583: The progressive loss of energy at each level in a food chain leads to Options:
  A) an increase in biomass at each successive level
  B) a decrease in biomass at each successive level
  C) an increase in the number of organism at each successive level
  D) an increase in the total number of organisms at each successive level
  Show Answer
  The correct answer is B .
• Question 584: A freshwater pond may contain Options:
  A) tadpole, water boatman, leeches and crab
  B) water beetle, shrimps, water snail and water bug
  C) water lily, fish, water scorpion and dragon larva
  D) pon skater, water lily, shark and mosquito larva
  Show Answer
  The correct answer is C .
• Question 585: There will be agglutination when the Options:
  A) Group A serum mixes with Group A erythrocytes
  B) Group A serum mixes with group B erythrocytes
  C) Group AB serum mixes with Group O erythrocytes
  D) Group B serum mixes with Group B erythrocytes
  Show Answer
  The correct answer is B .
• Question 586: Which of the following substance is not found in urine? Options:
  A) Water
  B) Sodium chloride
  C) Nitrogenous compounds
  D) Calcium chloride
  E) Nitrogenous salts
  Show Answer
  The correct answer is D .
• Question 587:

  

  In the diagram, the population size of species II on the 20th day is

  Options:
  A) 100
  B) 200
  C) 300
  D) 400
  Show Answer
  The correct answer is B .
• Question 588: The capture and digestion of insects by a pitcher plant is a special form of nutrition termed Options:
  A) autotrophic
  B) heterotrophic
  C) chemosynthetic
  D) saprophytic
  Show Answer
  The correct answer is B .
• Question 589: When specimen X is mixed with few drops of iodine solution, the appearance of a blue-black colour confirms that X is Options:
  A) galactose
  B) starch
  C) sucrose
  D) glucose
  Show Answer
  The correct answer is B .
• Question 590:

  What is the tissue responsible for transporting water and minerals from the roots to the rest of the plant?

  Options:
  A) Xylem
  B) Epidermis
  C) Parenchyma
  D) Phloem
  Show Answer
  The correct answer is A .