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 1061: What is the genetic ratio of a cross between homozygous tall plant and a homozygous dwarf plant? Options:
  A) 0 tall : 4 short
  B) 3 tall : 1 short
  C) 2 short : 2 tall
  D) 1 tall : 1 short
  E) 4 tall : o short
  Show Answer
  The correct answer is E .
• Question 1062: The probability of a baby being a boy or a girl depends on the contribution of the Options:
  A) father's sex cell
  B) father's somatic chromosome
  C) mother's sex cell
  D) mother's X-chromosome
  Show Answer
  The correct answer is A .
• Question 1063: Mosses, liverworts and ferns can be grouped together because they Options:
  A) Are all aquatic plants
  B) All grow in deserts
  C) Are seedless plants
  D) Have undifferentiated plant bodies
  E) All produce colourless flowers
  Show Answer
  The correct answer is C .
• Question 1064: In a savanna ecosystem the abiotic factors include Options:
  A) legumes, temperature and sandy soil
  B) water, temperature and soil
  C) minerals, oxygen and reptiles
  D) water, soil and grasses
  Show Answer
  The correct answer is B .
• Question 1065:

  Blood circulation in a mammal is said to be double because?

  Options:
  A) it passes twice through the heart in a complete circuit
  B) it moves in both arteries and veins
  C) it circulates in both the heart and other organs
  D) the heart contains auricles and ventricles
  Show Answer
  The correct answer is A .
• Question 1066: Which of the following instruments is used for determining turbidity of water? Options:
  A) Thermometer
  B) secchi disc
  C) rain guage
  D) Hydrometer
  E) Wind vane
  Show Answer
  The correct answer is B .
• Question 1067:

  A biome characterized by hot summer, warm winter and treeless vegetation is

  Options:
  A) Steppe grasslands
  B) Temperate deserts
  C) Savannah grassland
  D) Tropical deserts
  Show Answer
  The correct answer is A .
• Question 1068:

  Which of the following organs is primarily responsible for excretion in humans?

  Options:
  A) Liver
  B) Pancreas
  C) Kidneys
  D) Lungs
  Show Answer
  The correct answer is C .
• Question 1069:

  The movement of part of a plant in response to external stimulus of no particular direction is?

  Options:
  A) taxism
  B) tropism
  C) haptotropic movement
  D) nastic movement
  Show Answer
  The correct answer is D .
• Question 1070: The following animals is an invertebrate except Options:
  A) flat worms
  B) round worms
  C) chordate
  D) protozoan
  Show Answer
  The correct answer is C .