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 2121: The richest source of vitamin A are Options:
  A) palm oil and groundnut oil
  B) palm oil and carrot
  C) rice and groundnut oil
  D) oranges and carrot
  Show Answer
  The correct answer is B .
• Question 2122: If water that has been coloured red is poured at the base of a wilting plant, it will appear as a red stain in the cells of the Options:
  A) xylem
  B) epidermis
  C) phloem
  D) parenchyma
  Show Answer
  The correct answer is A .
• Question 2123: The stage in the life history of a moth responsible for the destruction of agricultural crops is the Options:
  A) nymph
  B) imago
  C) pupa
  D) caterpillar
  Show Answer
  The correct answer is D .
• Question 2124: Taenia solium can be found in Options:
  A) cow
  B) goat
  C) dog
  D) pig
  Show Answer
  The correct answer is D .
• Question 2125: Which of the following is used to test for the presence of lime in a soil sample? Options:
  A) H₂SO_4(aq)
  B) NaOH_(aq)
  C) HCl_(aq)
  D) HNO_3(aq)
  Show Answer
  The correct answer is C .
• Question 2126: The structure that is most commonly identified in all living cells under the light microscope is the Options:
  A) mitochondrion
  B) chloroplast
  C) nucleus
  D) ribosome
  Show Answer
  The correct answer is C .
• Question 2127: Which of the following scenarios is an example of cohesion? Options:
  A) Water molecules stick to the surface of a mirror.
  B) Water sticks to the walls of blood vessels.
  C) Water molecules stay on the tip of a pine needle because the water is attracted to the surface of the needle.
  D) Water molecules stick to one another and form a bead
  Show Answer
  The correct answer is D .
• Question 2128: Denitrifying bacteria in nature liberate gaseous nitrogen directly from Options:
  A) ammonium salts
  B) soil nitrates
  C) thunderstorms
  D) soil nitrites
  E) plant and animal proteins
  Show Answer
  The correct answer is B .
• Question 2129:

  

  In the diagram, the importance of the association to the fungus is that it obtains

  Options:
  A) a partner for reproduction
  B) anchorage from the algea
  C) oxgen and carbohydrates from the algae
  D) water and mineral salts from the algae
  Show Answer
  The correct answer is C .
• Question 2130: A characteristic that distinguishes bryophytes from flowering plants is the Options:
  A) possession of true stems and leaves
  B) ability to reproduce asexually
  C) absence of vascular tisssues
  D) ability to grow in moist habitats
  Show Answer
  The correct answer is C .