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 1311: Adaptive radiation is illustrated in Options:
  A) modified insect mouthparts
  B) dentition in mammals
  C) wings in birds and bats
  D) appendages in insects
  Show Answer
  The correct answer is A .
• Question 1312: Salts and water are absorbed in the roots and transported to leaves by Options:
  A) diffusion through the xylem tissues
  B) osmosis through the phloem tissues
  C) diffusion through the phloem tissues
  D) osmosis through the xylem tissues
  Show Answer
  The correct answer is D .
• Question 1313:

  

  In the diagram, the part marked I will contain a high concentration of

  Options:
  A) ascorbic acid
  B) abscisic acid
  C) ethylene
  D) auxin
  Show Answer
  The correct answer is D .
• Question 1314: 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 1315: When a marine fish was taken from the ocean and put in a tank of fresh water, it died after a short period because Options:
  A) the tank was too small compare to the large ocean
  B) the body cells of the fish swelled and burst as a result of the hypotonic fresh water
  C) the body cells of the fish shrank as their sap was hypertonic to the fresh water
  D) there was no food in the tank, so the starved.
  Show Answer
  The correct answer is B .
• Question 1316: Double fertilization in higher plants is significant because it ensures the Options:
  A) formation of a fertile embryo
  B) formation of a fertile embryo and the endosperm
  C) developement of the seed
  D) developement of the fruit
  Show Answer
  The correct answer is B .
• Question 1317:

  

  A function of the part labelled II is to

  Options:
  A) equalize pressure on both sides of the tympanum
  B) conduct sound waves to the brain
  C) help the animal maintain balance or posture
  D) transform sound waves into electric impulses
  Show Answer
  The correct answer is A .
• Question 1318:

  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 1319: If a DNA strand has a base sequence TCA, its complementary strand must be Options:
  A) ATG
  B) TAG
  C) GAT
  D) AGT
  Show Answer
  The correct answer is D .
• Question 1320: Which of the following groups of invertebrates reproduces by budding? Options:
  A) Arthropoda
  B) Annelides
  C) Mollusces
  D) Coelenterata
  Show Answer
  The correct answer is D .