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 381: Which of the following statements is not true of a fish? Options:
  A) respires with the use of gills
  B) covered with scales
  C) they are homeothermic
  D) they are poikilothermic
  Show Answer
  The correct answer is C .
• Question 382:

  In monohybrid inheritance, if an organism carries two different alleles for a particular gene, it is called:

  Options:
  A) Homozygous
  B) Dominant
  C) Heterozygous
  D) Recessive
  Show Answer
  The correct answer is C .
• Question 383: Which of these is the terminal portion of the alimentary canal of a mammal? Options:
  A) Oesophagus
  B) Stomach
  C) Rectum
  D) Colon
  E) Appendix
  Show Answer
  The correct answer is C .
• Question 384: The behavioural adaptation in social insects could best be described as Options:
  A) symbiosis
  B) saprophytism
  C) parasitism
  D) commensalisms
  Show Answer
  The correct answer is A .
• Question 385:

  Which of the following mechanisms is responsible for providing support in plants?

  Options:
  A) Muscles and bones
  B) Exoskeleton
  C) Endocrine system
  D) Cell walls and turgor pressure
  Show Answer
  The correct answer is D .
• Question 386: Dead plants and animals are decomposed by bacteria and fungi into Options:
  A) nitrate
  B) nitrites
  C) amino acids
  D) ammonia
  Show Answer
  The correct answer is D .
• Question 387:

  The greatest influence on a stable ecosystem in nature is exerted by

  Options:
  A) man
  B) pollution
  C) animals
  D) rainfall
  Show Answer
  The correct answer is A .
• Question 388:

  The correct sequence for the perception of smell in mammals is?

  Options:
  A) chemicals --> olfactory nerve endings --> brain
  B) dissolved chemicals --> nasal sensory cells --> brain
  C) chemicals --> mucus membrane sensory cells --> brain
  D) dissolved chemicals --> sensory cells --> olfactory nerve --> brain
  Show Answer
  The correct answer is D .
• Question 389: Which of the following structure is adapted for feeding in a bird of prey? Options:
  A) Hooked break and sharp claws
  B) Smooth beak and strong claws
  C) Big beaks and strong feet
  D) Pointed beak and strong claws
  Show Answer
  The correct answer is A .
• Question 390: A samara differs from a cypsela by having Options:
  A) an extended pericarp
  B) a hard pericarp
  C) a pericarp fused with seed coat
  D) some hairy outgrowth on the pericarp
  Show Answer
  The correct answer is A .