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 531: The legs and beak of an egret resemble those of the heron because they Options:
  A) both feed on fishes
  B) are both birds
  C) occupy similar niche
  D) occupy the same trophic level
  Show Answer
  The correct answer is A .
• Question 532: 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 533:

  Which of the following instruments is NOT used in measuring abiotic factors in any habitat?

  Options:
  A) microscope
  B) thermometer
  C) hygrometer
  D) windvane
  Show Answer
  The correct answer is A .
• Question 534: Which of these is a trace element? Options:
  A) Iron
  B) Copper
  C) Calcium
  D) Sulphur
  Show Answer
  The correct answer is B .
• Question 535: A potometer is used to determine the rate at which a shoot Options:
  A) respires
  B) sucks air bubbles
  C) loses weight
  D) absorbs water
  E) transpires
  Show Answer
  The correct answer is E .
• Question 536: The ratio of carriers to sicklers in the F₁ generation derived from a parental cross of two carriers of haemoglobin S gene is Options:
  A) 3 : 1
  B) 1 : 3
  C) 2 : 1
  D) 1 : 2
  Show Answer
  The correct answer is C .
• Question 537: Which of these is NOT an adaptive features for arboreal life? Options:
  A) Possession of long tail
  B) Possession of claws
  C) Possession of teeths
  D) counter shading in coat colour
  Show Answer
  The correct answer is C .
• Question 538: 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 539: Carbon (IV) oxide content of the atmosphere is least affected by Options:
  A) cutting down and clearing of forests
  B) forest fires
  C) burning of fossil fuels
  D) plant and animal respiration
  Show Answer
  The correct answer is A .
• Question 540:

  

  The range at which soil essential elements concentration is recorded for optimal plant growth is marked

  Options:
  A) IV
  B) III
  C) II
  D) I
  Show Answer
  The correct answer is B .