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 421: Coloration of the eye is ______ variation Options:
  A) physiological
  B) morphological
  C) adaptive
  D) recessive
  Show Answer
  The correct answer is B .
• Question 422:

  Which of the following best describes physiological variation in biology?

  Options:
  A) Variations in the physiological processes and functions of organisms
  B) Differences in physical characteristics and appearance within a population
  C) Differences in behavior and social interactions among individuals
  D) Variations in the genetic makeup of individuals within a species
  Show Answer
  The correct answer is A .
• Question 423: Biological growth refers strictly to an increase in the Options:
  A) protoplasm of an organism
  B) number of organisms
  C) size of an organism
  D) development of form
  Show Answer
  The correct answer is A .
• Question 424: The kind of teeth used for tearing food materials is the Options:
  A) fang
  B) canine
  C) premolar
  D) carnassial
  E) incisor
  Show Answer
  The correct answer is B .
• Question 425:

  

  In which of the habitats will plants show xeromorphic features most prominently?

  Options:
  A) X
  B) R
  C) P
  D) Q
  Show Answer
  The correct answer is A .
• Question 426: A flower showing radial symmetry is said to be Options:
  A) pentamerous
  B) protandrous
  C) protogynous
  D) actinomorphic
  Show Answer
  The correct answer is D .
• Question 427:

  Which of the following is a nitrifying bacterium?

  Options:
  A) Rhizobium
  B) Nictrobacter
  C) Azotobacter
  D) Pseudomonas
  Show Answer
  The correct answer is B .
• Question 428:

  Which of the following statement about the similarities in plant and animal transport is correct?

  Options:
  A) Materials and hormones are transported in fluid form
  B) The transport medium is made up of only tissues
  C) Their materials are transported in the same vessels
  D) Diffusion is not required
  Show Answer
  The correct answer is A .
• Question 429: When sickle cell carrier marries a normal woman, the probability of them having a normal offspring is Options:
  A) 0.75
  B) 0.25
  C) 0.5
  D) .1
  Show Answer
  The correct answer is C .
• Question 430:

  Which of the following statements best describes the role of competition in the process of adaptation?

  Options:
  A) Competition leads to the selection of individuals with favorable traits for survival and reproduction
  B) Competition ensures equal distribution of resources among individuals in a population
  C) Competition leads to the development of new traits and adaptations in a population
  D) Competition reduces the need for adaptations as individuals coexist peacefully
  Show Answer
  The correct answer is A .