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 2131: For effective functioning of a bird's quill feather, hooks fit on the ridge of the Options:
  A) Vane
  B) rachis
  C) barbules
  D) barbs
  Show Answer
  The correct answer is C .
• Question 2132: The theory of natural selection was postulated by Options:
  A) Gregor Mendel
  B) Matthias Schleiden
  C) Charles Darwin
  D) Robert Hook
  Show Answer
  The correct answer is C .
• Question 2133: Anaerobic respiration in yeast produces Options:
  A) Carbondioxide and ethanol
  B) Carbondioxide and water
  C) Carbondioxide and oxygen
  D) Carbondioxide and glucose
  E) Ethanol and water
  Show Answer
  The correct answer is A .
• Question 2134: After one week of life, the weight of five chicks of the same sex hatched simultaneously from the eggs of the same hen and fed on the same diet were 45g, 40g, 35g, 33g and 30g. This is an example of Options:
  A) growth rate
  B) natural selection
  C) variation
  D) mutation
  Show Answer
  The correct answer is C .
• Question 2135: In an agricultural ecosystem, the biotic component consists of Options:
  A) crop, pest and beneficial insects
  B) crops, temperature and humidity
  C) pests, beneficial insects and water
  D) crops, water and soil
  Show Answer
  The correct answer is A .
• Question 2136: In an ecosystem, the LEAST efficient energy transfer link is from Options:
  A) producers to primary consumers
  B) sun to producers
  C) primary consumers to secondary consumers
  D) secondary consumers to decomposers
  Show Answer
  The correct answer is D .
• Question 2137:

  Irish potato is a

  Options:
  A) bulb
  B) tap root
  C) rhizome
  D) root tuber
  E) stem tuber
  Show Answer
  The correct answer is E .
• Question 2138:

  

  The part of the plant where photosynthesis is least likely to take place is

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is D .
• Question 2139: Adaptive radiation is illustrated in Options:
  A) modified insect mouthparts
  B) dentition in mammals
  C) wings in birds and bats
  D) appendages in insects
  Show Answer
  The correct answer is A .
• Question 2140:

  The theory of evolution can be defined as

  Options:
  A) The belief that all species were created in their current form
  B) The hypothesis that organisms strive to improve themselves over generations
  C) The idea that species change over time through natural processes
  D) The concept that evolution occurs through a series of sudden and dramatic changes
  Show Answer
  The correct answer is C .