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 261: In the internal structure of plants, a wide pith in the centre is common to Options:
  A) dicot stems and monocot stems
  B) dicot stem and monocot roots
  C) dicot roots and monocot roots
  D) dicot roots and monocot stems
  Show Answer
  The correct answer is B .
• Question 262: Which of these is not true of the insect? The possession of Options:
  A) two pairs of antennae
  B) jointed appendages
  C) exoskeleton
  D) three pairs of legs
  E) segmented body
  Show Answer
  The correct answer is A .
• Question 263: A mammal with red fur and long ears was crossed with another having white fur and short ears. If the offspring had a red fur and short ears, the Options:
  A) character are linked
  B) character are not linked
  C) parents are related
  D) parents are not related
  Show Answer
  The correct answer is A .
• Question 264: A food substance was treated with a few drops of Sudan III solution and a red coloration was obtained. The food contained Options:
  A) protein
  B) starch
  C) fat
  D) mineral salt
  Show Answer
  The correct answer is C .
• Question 265: Thyroxine and adrenalin are examples of hormones which control Options:
  A) blood grouping
  B) tongue rolling
  C) behavioural patterns
  D) colour variation
  Show Answer
  The correct answer is C .
• Question 266: After a heavy rainfall and the formation of a large pond, the most likely sequence of changes in the vegetation of the pond is Options:
  A) Euglena → water lily → Spirogyra → grass
  B) water lily → Spirogyra →grass → Euglena
  C) Spirogyra → Euglena → grass → water lily
  D) Euglena → Spirogyra → water lily → grass
  Show Answer
  The correct answer is C .
• Question 267: A severe deficiency of thyroxin results in Options:
  A) diabetes mellitus
  B) sexual underdevelopment
  C) cretinism
  D) gigantism
  Show Answer
  The correct answer is C .
• Question 268: Taenia solium can be found in Options:
  A) cow
  B) goat
  C) dog
  D) pig
  Show Answer
  The correct answer is D .
• Question 269: The best explanation for the theories of natural selection is that Options:
  A) all organisms have equal capacity for survival in their habitats
  B) organisms have varying capacities for survival in their habitats
  C) organisms compete for resource and better competitors survive and thrive
  D) habitats allow only organisms that will not have to compete for survival
  Show Answer
  The correct answer is C .
• Question 270: Example of competitors are Options:
  A) lizard and mouse
  B) snake and lizard
  C) grasshopper and mouse
  D) rabbit and snake
  Show Answer
  The correct answer is B .