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 1261: In an experiment to determine the percentage of air in a soil sample, the following readings were recorded: volume of water in measuring cylinder = 500 cm³volume of soil added to water = 350 cm³volume of water and soil after stirring = 800 cm³the percentage of air in the soil sample is Options:
  A) 6.25%
  B) 10.36%
  C) 14.28%
  D) 43.28%
  Show Answer
  The correct answer is A .
• Question 1262: The solid part of the ecosystem is referred to as the Options:
  A) atmosphere
  B) hydrosphere
  C) biosphere
  D) lithosphere
  Show Answer
  The correct answer is D .
• Question 1263: Which of the following insects lays its eggs in horny, purse-like cases? Options:
  A) Mosquito
  B) Butterfly
  C) Termite
  D) Cockroach
  Show Answer
  The correct answer is D .
• Question 1264:

  What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?

  Options:
  A) availability of nutrients
  B) availability of water
  C) intensity of light
  D) carbon dioxide concentration
  Show Answer
  The correct answer is C .
• Question 1265:

  The study of an individual organism or a single species of organism and its environment is

  Options:
  A) Artecology
  B) Ecological concepts
  C) Synecoloy
  D) Biotic composers
  Show Answer
  The correct answer is A .
• Question 1266:

  

  As the tadpole develops, the structure labelled 5

  Options:
  A) grows longer
  B) becomes shorter
  C) becomes the hind legs
  D) remains unchanged
  Show Answer
  The correct answer is B .
• Question 1267: Osmic acid boiled with a solution of food substance gave a black precipitate. This indicates the presence of Options:
  A) fats and oil
  B) proteins
  C) amino acids
  D) starch
  Show Answer
  The correct answer is A .
• Question 1268:

  The lowest level of organization in living organisms is

  Options:
  A) organ
  B) cell
  C) system
  D) tissue
  Show Answer
  The correct answer is B .
• Question 1269: Which of the following instruments is used to demonstrate the response of roots and shoots to gravity? Options:
  A) Klinostat
  B) Manometer
  C) Porometer
  D) Potometer
  E) Photometer
  Show Answer
  The correct answer is A .
• Question 1270: Fruits which develop without fertilization of the ovule are Options:
  A) false
  B) multiple
  C) aggrgate
  D) parthenocarpic
  Show Answer
  The correct answer is D .