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: The most efficient respiratory structure used by free living protozoan is ________ Options:
  A) body surface
  B) gills
  C) buccal cavity
  D) spiracle
  Show Answer
  The correct answer is A .
• Question 382: If an animal has diastema, it would NOT posses Options:
  A) incissors
  B) cannines
  C) premolars
  D) molars
  Show Answer
  The correct answer is B .
• Question 383:

  What is the primary source of variation in a population?

  Options:
  A) Gene flow
  B) Mutation
  C) Natural selection
  D) Genetic drift
  Show Answer
  The correct answer is B .
• Question 384: In tapeworm, the two structure that run throughout the length of the body are the Options:
  A) nerve cord and excretory duct
  B) sperm duct and the nerve cord
  C) genital pore and the excretory duct
  D) sperm duct and the genital pore
  Show Answer
  The correct answer is A .
• Question 385: Complex social behaviour and organization are found mostly in Options:
  A) insects
  B) birds
  C) reptiles
  D) mammals
  Show Answer
  The correct answer is D .
• Question 386: The micro-organisms that causes Typhoid disease is Options:
  A) trypanosome gambiense
  B) Salmonella typhi
  C) entamocbahistolytica
  D) plasmodium sp
  Show Answer
  The correct answer is B .
• Question 387: One basic similarity between nervous and endocrine system is that they both Options:
  A) produce widespread effects
  B) transmit very fast impulses
  C) involve the use of chemical substances
  D) produce precise and short-lived effect
  Show Answer
  The correct answer is C .
• Question 388: Haemophilia results from the mutation of the genes Options:
  A) in the sex chromosome
  B) which control skin colour
  C) which control the mechanism for blood-clotting
  D) which control the formation of haemoglobin
  Show Answer
  The correct answer is C .
• Question 389: An argument against Lamarck's theory of evolution is that Options:
  A) disuse of body part cannot weaken the part
  B) disused part is dropped off in the offspring
  C) acquired traits cannot be passed on to the offspring
  D) trait cannot be acquired through constant use of body parts
  Show Answer
  The correct answer is C .
• Question 390: The construction of dams may lead to an increase in the prevalence of Options:
  A) typhoid fever, measles and yellow fever
  B) tuberculosis, leprosy and trypanosomiasis
  C) guinea worm, malaria and tuberculosis
  D) malaria, bilharziasis and onchocerciasis
  Show Answer
  The correct answer is D .