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 271:

  One of the following is an effect of clay soil on vegetation

  Options:
  A) Supports luxuriant vegetation such as forest
  B) Supports scanty vegetation
  C) Does not support light vegetation
  D) Support arid vegetation
  Show Answer
  The correct answer is A .
• Question 272: 28 g soil sample was heated to a constant weight of 24 g. When further heated to red hot and cooled, it weighed 18 g. What is the percentage of humus in the soil? Options:
  A) 22.2
  B) 55.6
  C) 75.0
  D) 25.0
  E) 35.7
  Show Answer
  The correct answer is A .
• Question 273: Which of the following describes a characteristic of arthropods? Options:
  A) The organism finds it easy to grow freely
  B) the organism has a pair of jointed appendages
  C) the body is not divided into a number of segments seg
  D) the body is covered by chitin
  Show Answer
  The correct answer is D .
• Question 274: Environmental pollutants which can work through the media of water, soil and air include Options:
  A) carbon monoxide
  B) noise
  C) sulphur(IV)oxide
  D) smoke
  Show Answer
  The correct answer is C .
• Question 275: Which of the following statement is NOT true of symbiosis? Options:
  A) Symbionts must be living
  B) It is an association of 'give and take'
  C) The association may involve two plants
  D) Association between two similar species
  E) Symbionts derive mutual benefit
  Show Answer
  The correct answer is D .
• Question 276: An example of an endospermous seed is Options:
  A) maize gain
  B) cashew nut
  C) cotton seed
  D) been seed
  Show Answer
  The correct answer is A .
• Question 277: Which of these is not an enzyme? Options:
  A) Pepsin
  B) Gastrin
  C) Amylase
  D) Chymotrypsin
  E) Trypsin
  Show Answer
  The correct answer is B .
• Question 278:

  

  The figure above is a section of a drupe. The part numbered 2 is

  Options:
  A) epicarp
  B) endocarp
  C) mesocarp
  D) seed
  E) pericarp
  Show Answer
  The correct answer is C .
• Question 279: An example of a caryopsis is Options:
  A) Guava
  B) Maize grain
  C) Coconut
  D) Tomato
  Show Answer
  The correct answer is B .
• Question 280: Th order in which organic evolution has progressed in plants is Options:
  A) thallophyta, schizophyta, bryophyta, pteridophyta and spermatophyta
  B) schizophyta, thallophyta, bryophyta, pteridophyta and spermatophyta
  C) pteridophyta, spermatophyta, thallophyta, schizophyta and bryophyta
  D) bryophyta, pteridophyta, spermatphyta, thallophyta and schizophyta
  Show Answer
  The correct answer is B .