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 2021: Which of the following plant hormone is responsible for ripening of fruits? Options:
  A) Gibberellins
  B) Abscisic acid
  C) Ethylene
  D) Cytokinins
  Show Answer
  The correct answer is C .
• Question 2022: A population is defined as the collection of Options:
  A) Similar organism that are found in the same habitat
  B) Similar organisms that breed in the same habitat
  C) Similar organisms that interbreed freely in the same habitat
  D) Similar organism eating the same food
  E) Different organisms in the same habitat
  Show Answer
  The correct answer is C .
• Question 2023: Snails belong to the phylum Options:
  A) Annelida
  B) Mollusca
  C) Echinodermata
  D) nematode
  Show Answer
  The correct answer is B .
• Question 2024: In the transverse section of the leaf of maize vascular bundles are arranged in Options:
  A) a row
  B) one circle
  C) alternate position
  D) two circles
  Show Answer
  The correct answer is B .
• Question 2025: The flowering period of plants in a habitat is determined by the Options:
  A) duration of sunlight
  B) intensity and duration of rainfall
  C) relative humidity of the atmosphere
  D) temperature of the habitat
  Show Answer
  The correct answer is A .
• Question 2026:

  What is the critical limiting factor for plants below the photic zone in an aquatic ecosystem?

  Options:
  A) availability of nutrients
  B) availability of water
  C) intensity of light
  D) carbon dioxide concentration
  Show Answer
  The correct answer is C .
• Question 2027:

  The body of a snail is divided into head?

  Options:
  A) thorax and abdomen
  B) visceral mass and abdomen
  C) thorax and foot
  D) visceral mass and foot
  Show Answer
  The correct answer is D .
• Question 2028: Which of the following structure is NOT found in the female agama lizard? Options:
  A) Pre-anal pads
  B) Eardrum
  C) Gular fold
  D) Nasal scale
  E) Nuchal crest
  Show Answer
  The correct answer is E .
• Question 2029: The spores of ferns are dispersed by Options:
  A) wind
  B) water
  C) insects
  D) explosive mechanism
  E) sporophyte
  Show Answer
  The correct answer is D .
• Question 2030: An example of a sex linked trait is the Options:
  A) ability to grow long hair in females
  B) colour of the skin in humans
  C) ability to roll the tongue
  D) possession of facial hair in adult humans
  Show Answer
  The correct answer is D .