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 581: The basic point of impact by changes which produce mutation is the Options:
  A) gametes
  B) chromosomes
  C) phenotype
  D) zygote
  Show Answer
  The correct answer is B .
• Question 582: In the internal structure of plants, a wide pith in the centre is common to Options:
  A) dicot stems and monocot stems
  B) dicot stem and monocot roots
  C) dicot roots and monocot roots
  D) dicot roots and monocot stems
  Show Answer
  The correct answer is B .
• Question 583: Leaching is Options:
  A) Washing away of humus from the soil surface
  B) reducing of soil aeration by pressure
  C) soil erosion by means other than rainfall
  D) loss of organic matter due to exposure to direct sunlight
  E) washing out chalk and limestone from upper layers of by heavy rains
  Show Answer
  The correct answer is A .
• Question 584:

  In natural selection, Darwin proposed that evolution occurred because of the following conditions except

  Options:
  A) that nature selects those that will survive to reproduce their kind
  B) there is a fierce competition among the offspring
  C) that the weaker offspring are eliminated
  D) food and other needs are abundant
  Show Answer
  The correct answer is D .
• Question 585: The difference and similarities among living things account for Options:
  A) diversity
  B) stability
  C) competition
  D) evolution
  Show Answer
  The correct answer is D .
• Question 586: 5 g of oven dried soil was heated in a furnace for 24 hours. After cooling, it weighed 4.8 g. What is the amount of humus in the soil? Options:
  A) 40.0g per 100 g dry soil
  B) 4.4g per 100g dry soil
  C) 4.0 g per 100g dry soil
  D) 0.4g per 100g dry soil
  Show Answer
  The correct answer is C .
• Question 587:

  Which of the following best describes a natural habitat in ecology?

  Options:
  A) An area where organisms naturally live and interact with their surroundings
  B) A human-created environment for wildlife conservation
  C) A controlled laboratory setting for ecological experiments
  D) A protected area for endangered species
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  The correct answer is A .
• Question 588:

  Which of the following produces both hormones and enzymes?

  Options:
  A) Ileum
  B) Pancreas
  C) Gall bladder
  D) Kidney
  Show Answer
  The correct answer is B .
• Question 589: Lichen is an example of Options:
  A) saprophytic organism
  B) a symbiotic association
  C) an epiphytic plant
  D) a carnivorous plant
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  The correct answer is B .
• Question 590:

  

  The type of joint at the point labelled 5 is the

  Options:
  A) pivot joint
  B) gliding joint
  C) ball and socket joint
  D) hinge joint
  Show Answer
  The correct answer is D .