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 631: The sequence of the one-way gaseous exchange mechanism in a fish is Options:
  A) gills ⇢ operculum ⇢ mouth
  B) mouth ⇢ gills ⇢ operculum
  C) mouth ⇢ operculum ⇢ gills
  D) operculum ⇢ mouth ⇢ gills
  Show Answer
  The correct answer is B .
• Question 632: Atmospheric nitrogen is converted to soil nitrogen for plant use by Options:
  A) nitrification and combustion
  B) putrefaction and lightning
  C) lightning and nitrification
  D) combustion and putrefaction
  Show Answer
  The correct answer is B .
• Question 633:

  The gland that is present close to Trachea

  Options:
  A) Pancreas
  B) Liver
  C) Adrenal
  D) Thyroid
  Show Answer
  The correct answer is D .
• Question 634: In mosses the structure which performs the function of water absorption is the _________? Options:
  A) root hairs
  B) rhizoids
  C) capsule
  D) hyphae
  Show Answer
  The correct answer is B .
• Question 635: The crossing of individuals of the same species with different genetic characters is Options:
  A) cross breeding
  B) polygenic inheritance
  C) non-disjunction
  D) inbreeding
  Show Answer
  The correct answer is D .
• Question 636: Banana, plantain and pineapple can be grouped together because they Options:
  A) produce small seeds
  B) are multiple fruit
  C) produce suckers
  D) have runners
  E) have bulbils
  Show Answer
  The correct answer is C .
• Question 637: The most important environment factor which epiphytes in the rain forest compete for is Options:
  A) water
  B) nutrients
  C) light
  D) cabinet minister
  E) space
  Show Answer
  The correct answer is C .
• Question 638: which of these diseases cannot be controlled by killing the vector? Options:
  A) River blindness
  B) Malaria
  C) Polio
  D) Cholera
  E) Bilharzia (shistosoma)
  Show Answer
  The correct answer is C .
• Question 639: The prothallus of fern is equivalent to the gametophyte generation of moss because it Options:
  A) is inconspicuous
  B) has rhizoids
  C) bears sexual organ
  D) is multicellular
  Show Answer
  The correct answer is C .
• Question 640:

  Which of the following is an example of discontinous variatio?

  Options:
  A) The range in height of a pea plant from 30cm to 50cm
  B) Offsprings including two male cats and three female cats
  C) The colour of pear plants grown in the dark
  D) The adult body weight ranging from 50kg to 95kg
  Show Answer
  The correct answer is B .